About the Number
29131178858.000000000000
2進数表記:10101110011101011111000001010100000000
漢数字表記:千八百七十三億二千五百七十四万八千四百八十
素因数分解:
素因数の和:387
約数の個数: 1152
約数和(自身を含む): 733155655680
約数和(自身を除く): 545829907200
約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 19, 20, 23, 24, 26, 30, 31, 32, 38, 39, 40, 46, 48, 52, 57, 60, 62, 64, 65, 69, 76, 78, 80, 92, 93, 95, 96, 104, 114, 115, 120, 124, 128, 130, 138, 152, 155, 156, 160, 184, 186, 190, 192, 195, 208, 228, 230, 240, 247, 248, 256, 260, 276, 277, 285, 299, 304, 310, 312, 320, 345, 368, 372, 380, 384, 390, 403, 416, 437, 456, 460, 465, 480, 494, 496, 520, 552, 554, 570, 589, 598, 608, 620, 624, 640, 690, 713, 736, 741, 744, 760, 768, 780, 806, 831, 832, 874, 897, 912, 920, 930, 960, 988, 992, 1040, 1104, 1108, 1140, 1178, 1196, 1209, 1216, 1235, 1240, 1248, 1280, 1311, 1380, 1385, 1426, 1472, 1482, 1488, 1495, 1520, 1560, 1612, 1662, 1664, 1748, 1767, 1794, 1824, 1840, 1860, 1920, 1976, 1984, 2015, 2080, 2139, 2185, 2208, 2216, 2280, 2356, 2392, 2418, 2432, 2470, 2480, 2496, 2622, 2760, 2770, 2852, 2944, 2945, 2964, 2976, 2990, 3040, 3120, 3224, 3324, 3328, 3496, 3534, 3565, 3588, 3601, 3648, 3680, 3705, 3720, 3840, 3952, 3968, 4030, 4155, 4160, 4278, 4370, 4416, 4432, 4485, 4560, 4712, 4784, 4836, 4864, 4940, 4960, 4992, 5244, 5263, 5520, 5540, 5681, 5704, 5888, 5890, 5928, 5952, 5980, 6045, 6080, 6240, 6371, 6448, 6555, 6648, 6992, 7068, 7130, 7176, 7202, 7296, 7360, 7410, 7440, 7657, 7904, 7936, 8060, 8310, 8320, 8556, 8587, 8740, 8832, 8835, 8864, 8970, 9120, 9269, 9424, 9568, 9672, 9880, 9920, 9984, 10488, 10526, 10695, 10803, 11040, 11080, 11362, 11408, 11780, 11856, 11904, 11960, 12090, 12160, 12480, 12742, 12896, 13110, 13296, 13547, 13984, 14136, 14260, 14352, 14404, 14592, 14720, 14820, 14880, 15314, 15789, 15808, 16120, 16620, 16640, 17043, 17112, 17174, 17480, 17664, 17670, 17728, 17940, 18005, 18240, 18538, 18848, 19113, 19136, 19344, 19760, 19840, 20976, 21052, 21390, 21606, 22080, 22160, 22724, 22816, 22971, 23560, 23712, 23808, 23920, 24180, 24320, 24960, 25484, 25761, 25792, 26220, 26315, 26592, 27094, 27807, 27968, 28272, 28405, 28520, 28704, 28808, 29440, 29640, 29760, 30628, 31578, 31616, 31855, 32240, 33240, 34086, 34224, 34348, 34960, 35340, 35456, 35880, 36010, 36480, 37076, 37696, 38226, 38272, 38285, 38688, 39520, 39680, 40641, 41952, 42104, 42780, 42935, 43212, 44160, 44320, 45448, 45632, 45942, 46345, 47120, 47424, 47840, 48360, 49920, 50968, 51522, 51584, 52440, 52630, 53184, 54015, 54188, 55614, 55936, 56544, 56810, 57040, 57408, 57616, 59280, 59520, 61256, 63156, 63232, 63710, 64480, 66480, 67735, 68172, 68419, 68448, 68696, 69920, 70680, 70912, 71760, 72020, 72960, 74152, 75392, 76452, 76544, 76570, 77376, 78945, 79040, 81282, 82823, 83904, 84208, 85215, 85560, 85870, 86424, 88320, 88640, 90896, 91264, 91884, 92690, 94240, 94848, 95565, 95680, 96720, 101936, 103044, 103168, 104880, 105260, 106368, 108030, 108376, 111228, 111631, 111872, 113088, 113620, 114080, 114816, 114855, 115232, 118560, 119040, 121049, 122512, 126312, 127420, 128805, 128960, 132960, 135470, 136344, 136838, 136896, 137392, 139035, 139840, 141360, 143520, 144040, 148304, 150784, 152904, 153140, 154752, 157890, 158080, 162564, 163153, 165646, 167808, 168416, 170430, 171120, 171740, 172848, 176111, 177280, 181792, 182528, 183768, 185380, 188480, 189696, 191130, 191360, 193440, 197501, 203205, 203872, 205257, 206088, 209760, 210520, 212736, 216060, 216752, 222456, 223262, 226176, 227240, 228160, 229632, 229710, 230464, 237120, 242098, 245024, 248469, 252624, 254840, 257610, 257920, 265920, 270940, 272688, 273676, 273792, 274784, 278070, 279680, 282720, 287040, 288080, 296608, 305808, 306280, 309504, 315780, 316160, 325128, 326306, 331292, 334893, 335616, 336832, 340860, 342095, 342240, 343480, 345696, 352222, 354560, 363147, 363584, 367536, 370760, 376960, 382260, 382720, 386880, 395002, 406410, 407744, 410514, 412176, 414115, 419520, 421040, 432120, 433504, 444912, 446524, 452352, 454480, 456320, 459420, 460928, 474240, 484196, 489459, 490048, 496938, 505248, 509680, 515220, 515840, 528333, 531840, 541880, 545376, 547352, 547584, 549568, 556140, 558155, 559360, 565440, 574080, 576160, 592503, 593216, 605245, 611616, 612560, 631560, 650256, 652612, 662584, 669786, 673664, 681720, 684190, 684480, 686960, 691392, 704444, 726294, 727168, 735072, 741520, 753920, 764520, 773760, 790004, 812820, 815488, 815765, 821028, 824352, 828230, 839040, 842080, 864240, 867008, 880555, 889824, 893048, 908960, 912640, 918840, 921856, 948480, 968392, 978918, 980096, 987505, 993876, 1010496, 1019360, 1026285, 1030440, 1056666, 1063680, 1083760, 1090752, 1094704, 1099136, 1112280, 1116310, 1130880, 1148160, 1152320, 1185006, 1186432, 1210490, 1223232, 1225120, 1242345, 1263120, 1300512, 1305224, 1325168, 1339572, 1347328, 1363440, 1368380, 1368960, 1373920, 1382784, 1408888, 1452588, 1454336, 1470144, 1483040, 1529040, 1547520, 1573637, 1580008, 1625640, 1630976, 1631530, 1642056, 1648704, 1656460, 1674465, 1678080, 1684160, 1728480, 1734016, 1761110, 1779648, 1786096, 1815735, 1817920, 1837680, 1936784, 1957836, 1960192, 1975010, 1987752, 2020992, 2038720, 2052570, 2060880, 2113332, 2120989, 2167520, 2181504, 2189408, 2198272, 2224560, 2232620, 2261760, 2304640, 2370012, 2372864, 2420980, 2446464, 2447295, 2450240, 2484690, 2526240, 2567513, 2601024, 2610448, 2641665, 2650336, 2679144, 2726880, 2736760, 2737920, 2747840, 2765568, 2817776, 2905176, 2940288, 2962515, 2966080, 3058080, 3147274, 3160016, 3251280, 3263060, 3284112, 3297408, 3312920, 3348930, 3368320, 3456960, 3468032, 3522220, 3559296, 3572192, 3631470, 3635840, 3675360, 3752519, 3873568, 3915672, 3950020, 3975504, 4041984, 4077440, 4105140, 4121760, 4226664, 4241978, 4335040, 4363008, 4378816, 4449120, 4465240, 4609280, 4720911, 4740024, 4841960, 4892928, 4894590, 4900480, 4969380, 5052480, 5135026, 5202048, 5220896, 5283330, 5300672, 5358288, 5453760, 5473520, 5495680, 5635552, 5810352, 5880576, 5925030, 5932160, 6116160, 6294548, 6320032, 6362967, 6502560, 6526120, 6568224, 6594816, 6625840, 6697860, 6736640, 6913920, 7044440, 7118592, 7144384, 7262940, 7271680, 7350720, 7505038, 7702539, 7747136, 7831344, 7868185, 7900040, 7951008, 8154880, 8210280, 8243520, 8453328, 8483956, 8670080, 8757632, 8898240, 8930480, 9441822, 9480048, 9683920, 9789180, 9800960, 9938760, 10104960, 10270052, 10404096, 10441792, 10566660, 10601344, 10604945, 10716576, 10907520, 10947040, 10991360, 11257557, 11271104, 11620704, 11850060, 11864320, 12232320, 12589096, 12640064, 12725934, 12837565, 13005120, 13052240, 13136448, 13251680, 13395720, 13827840, 14088880, 14288768, 14525880, 14701440, 15010076, 15405078, 15494272, 15662688, 15736370, 15800080, 15902016, 16420560, 16487040, 16906656, 16967912, 17340160, 17515264, 17796480, 17860960, 18762595, 18883644, 18960096, 19367840, 19578360, 19877520, 20209920, 20540104, 20883584, 21133320, 21202688, 21209890, 21433152, 21815040, 21894080, 22515114, 22542208, 23241408, 23604555, 23700120, 24464640, 25178192, 25280128, 25451868, 25675130, 26010240, 26104480, 26272896, 26503360, 26791440, 28177760, 28577536, 29051760, 29402880, 30020152, 30810156, 30988544, 31325376, 31472740, 31600160, 31804032, 31814835, 32841120, 32974080, 33813312, 33935824, 35592960, 35721920, 37525190, 37767288, 37920192, 38512695, 38735680, 39156720, 39755040, 41080208, 41767168, 42266640, 42419780, 42866304, 43788160, 45030228, 45084416, 46482816, 47209110, 47400240, 48782747, 50356384, 50560256, 50903736, 51350260, 52020480, 52208960, 52545792, 53006720, 53582880, 56287785, 56355520, 58103520, 60040304, 61620312, 62650752, 62945480, 63200320, 63608064, 63629670, 65682240, 67626624, 67871648, 71443840, 75050380, 75534576, 75840384, 77025390, 77471360, 78313440, 79510080, 82160416, 84533280, 84839560, 85732608, 87576320, 90060456, 92965632, 94418220, 94800480, 97565494, 100712768, 101807472, 102700520, 104417920, 106013440, 107165760, 112575570, 112711040, 116207040, 120080608, 123240624, 125301504, 125890960, 126400640, 127259340, 131364480, 135253248, 135743296, 142887680, 146348241, 150100760, 151069152, 151680768, 154050780, 154942720, 156626880, 159020160, 164320832, 169066560, 169679120, 180120912, 188836440, 189600960, 195130988, 201425536, 203614944, 205401040, 208835840, 214331520, 225151140, 225422080, 232414080, 240161216, 243913735, 246481248, 251781920, 252801280, 254518680, 262728960, 271486592, 292696482, 300201520, 302138304, 308101560, 313253760, 318040320, 328641664, 338133120, 339358240, 360241824, 377672880, 379201920, 390261976, 402851072, 407229888, 410802080, 428663040, 450302280, 464828160, 480322432, 487827470, 492962496, 503563840, 509037360, 542973184, 585392964, 600403040, 604276608, 616203120, 626507520, 657283328, 676266240, 678716480, 720483648, 731741205, 755345760, 758403840, 780523952, 814459776, 821604160, 900604560, 960644864, 975654940, 985924992, 1007127680, 1018074720, 1170785928, 1200806080, 1208553216, 1232406240, 1357432960, 1440967296, 1463482410, 1510691520, 1561047904, 1628919552, 1643208320, 1801209120, 1951309880, 1971849984, 2014255360, 2036149440, 2341571856, 2401612160, 2464812480, 2714865920, 2881934592, 2926964820, 3021383040, 3122095808, 3286416640, 3602418240, 3902619760, 4072298880, 4683143712, 4803224320, 4929624960, 5853929640, 6042766080, 6244191616, 7204836480, 7805239520, 8144597760, 9366287424, 9859249920, 11707859280, 12488383232, 14409672960, 15610479040, 18732574848, 23415718560, 31220958080, 37465149696, 46831437120, 62441916160, 93662874240, 187325748480]
約数ペア:
[(1, 187325748480), (2, 93662874240), (3, 62441916160), (4, 46831437120), (5, 37465149696), (6, 31220958080), (8, 23415718560), (10, 18732574848), (12, 15610479040), (13, 14409672960), (15, 12488383232), (16, 11707859280), (19, 9859249920), (20, 9366287424), (23, 8144597760), (24, 7805239520), (26, 7204836480), (30, 6244191616), (31, 6042766080), (32, 5853929640), (38, 4929624960), (39, 4803224320), (40, 4683143712), (46, 4072298880), (48, 3902619760), (52, 3602418240), (57, 3286416640), (60, 3122095808), (62, 3021383040), (64, 2926964820), (65, 2881934592), (69, 2714865920), (76, 2464812480), (78, 2401612160), (80, 2341571856), (92, 2036149440), (93, 2014255360), (95, 1971849984), (96, 1951309880), (104, 1801209120), (114, 1643208320), (115, 1628919552), (120, 1561047904), (124, 1510691520), (128, 1463482410), (130, 1440967296), (138, 1357432960), (152, 1232406240), (155, 1208553216), (156, 1200806080), (160, 1170785928), (184, 1018074720), (186, 1007127680), (190, 985924992), (192, 975654940), (195, 960644864), (208, 900604560), (228, 821604160), (230, 814459776), (240, 780523952), (247, 758403840), (248, 755345760), (256, 731741205), (260, 720483648), (276, 678716480), (277, 676266240), (285, 657283328), (299, 626507520), (304, 616203120), (310, 604276608), (312, 600403040), (320, 585392964), (345, 542973184), (368, 509037360), (372, 503563840), (380, 492962496), (384, 487827470), (390, 480322432), (403, 464828160), (416, 450302280), (437, 428663040), (456, 410802080), (460, 407229888), (465, 402851072), (480, 390261976), (494, 379201920), (496, 377672880), (520, 360241824), (552, 339358240), (554, 338133120), (570, 328641664), (589, 318040320), (598, 313253760), (608, 308101560), (620, 302138304), (624, 300201520), (640, 292696482), (690, 271486592), (713, 262728960), (736, 254518680), (741, 252801280), (744, 251781920), (760, 246481248), (768, 243913735), (780, 240161216), (806, 232414080), (831, 225422080), (832, 225151140), (874, 214331520), (897, 208835840), (912, 205401040), (920, 203614944), (930, 201425536), (960, 195130988), (988, 189600960), (992, 188836440), (1040, 180120912), (1104, 169679120), (1108, 169066560), (1140, 164320832), (1178, 159020160), (1196, 156626880), (1209, 154942720), (1216, 154050780), (1235, 151680768), (1240, 151069152), (1248, 150100760), (1280, 146348241), (1311, 142887680), (1380, 135743296), (1385, 135253248), (1426, 131364480), (1472, 127259340), (1482, 126400640), (1488, 125890960), (1495, 125301504), (1520, 123240624), (1560, 120080608), (1612, 116207040), (1662, 112711040), (1664, 112575570), (1748, 107165760), (1767, 106013440), (1794, 104417920), (1824, 102700520), (1840, 101807472), (1860, 100712768), (1920, 97565494), (1976, 94800480), (1984, 94418220), (2015, 92965632), (2080, 90060456), (2139, 87576320), (2185, 85732608), (2208, 84839560), (2216, 84533280), (2280, 82160416), (2356, 79510080), (2392, 78313440), (2418, 77471360), (2432, 77025390), (2470, 75840384), (2480, 75534576), (2496, 75050380), (2622, 71443840), (2760, 67871648), (2770, 67626624), (2852, 65682240), (2944, 63629670), (2945, 63608064), (2964, 63200320), (2976, 62945480), (2990, 62650752), (3040, 61620312), (3120, 60040304), (3224, 58103520), (3324, 56355520), (3328, 56287785), (3496, 53582880), (3534, 53006720), (3565, 52545792), (3588, 52208960), (3601, 52020480), (3648, 51350260), (3680, 50903736), (3705, 50560256), (3720, 50356384), (3840, 48782747), (3952, 47400240), (3968, 47209110), (4030, 46482816), (4155, 45084416), (4160, 45030228), (4278, 43788160), (4370, 42866304), (4416, 42419780), (4432, 42266640), (4485, 41767168), (4560, 41080208), (4712, 39755040), (4784, 39156720), (4836, 38735680), (4864, 38512695), (4940, 37920192), (4960, 37767288), (4992, 37525190), (5244, 35721920), (5263, 35592960), (5520, 33935824), (5540, 33813312), (5681, 32974080), (5704, 32841120), (5888, 31814835), (5890, 31804032), (5928, 31600160), (5952, 31472740), (5980, 31325376), (6045, 30988544), (6080, 30810156), (6240, 30020152), (6371, 29402880), (6448, 29051760), (6555, 28577536), (6648, 28177760), (6992, 26791440), (7068, 26503360), (7130, 26272896), (7176, 26104480), (7202, 26010240), (7296, 25675130), (7360, 25451868), (7410, 25280128), (7440, 25178192), (7657, 24464640), (7904, 23700120), (7936, 23604555), (8060, 23241408), (8310, 22542208), (8320, 22515114), (8556, 21894080), (8587, 21815040), (8740, 21433152), (8832, 21209890), (8835, 21202688), (8864, 21133320), (8970, 20883584), (9120, 20540104), (9269, 20209920), (9424, 19877520), (9568, 19578360), (9672, 19367840), (9880, 18960096), (9920, 18883644), (9984, 18762595), (10488, 17860960), (10526, 17796480), (10695, 17515264), (10803, 17340160), (11040, 16967912), (11080, 16906656), (11362, 16487040), (11408, 16420560), (11780, 15902016), (11856, 15800080), (11904, 15736370), (11960, 15662688), (12090, 15494272), (12160, 15405078), (12480, 15010076), (12742, 14701440), (12896, 14525880), (13110, 14288768), (13296, 14088880), (13547, 13827840), (13984, 13395720), (14136, 13251680), (14260, 13136448), (14352, 13052240), (14404, 13005120), (14592, 12837565), (14720, 12725934), (14820, 12640064), (14880, 12589096), (15314, 12232320), (15789, 11864320), (15808, 11850060), (16120, 11620704), (16620, 11271104), (16640, 11257557), (17043, 10991360), (17112, 10947040), (17174, 10907520), (17480, 10716576), (17664, 10604945), (17670, 10601344), (17728, 10566660), (17940, 10441792), (18005, 10404096), (18240, 10270052), (18538, 10104960), (18848, 9938760), (19113, 9800960), (19136, 9789180), (19344, 9683920), (19760, 9480048), (19840, 9441822), (20976, 8930480), (21052, 8898240), (21390, 8757632), (21606, 8670080), (22080, 8483956), (22160, 8453328), (22724, 8243520), (22816, 8210280), (22971, 8154880), (23560, 7951008), (23712, 7900040), (23808, 7868185), (23920, 7831344), (24180, 7747136), (24320, 7702539), (24960, 7505038), (25484, 7350720), (25761, 7271680), (25792, 7262940), (26220, 7144384), (26315, 7118592), (26592, 7044440), (27094, 6913920), (27807, 6736640), (27968, 6697860), (28272, 6625840), (28405, 6594816), (28520, 6568224), (28704, 6526120), (28808, 6502560), (29440, 6362967), (29640, 6320032), (29760, 6294548), (30628, 6116160), (31578, 5932160), (31616, 5925030), (31855, 5880576), (32240, 5810352), (33240, 5635552), (34086, 5495680), (34224, 5473520), (34348, 5453760), (34960, 5358288), (35340, 5300672), (35456, 5283330), (35880, 5220896), (36010, 5202048), (36480, 5135026), (37076, 5052480), (37696, 4969380), (38226, 4900480), (38272, 4894590), (38285, 4892928), (38688, 4841960), (39520, 4740024), (39680, 4720911), (40641, 4609280), (41952, 4465240), (42104, 4449120), (42780, 4378816), (42935, 4363008), (43212, 4335040), (44160, 4241978), (44320, 4226664), (45448, 4121760), (45632, 4105140), (45942, 4077440), (46345, 4041984), (47120, 3975504), (47424, 3950020), (47840, 3915672), (48360, 3873568), (49920, 3752519), (50968, 3675360), (51522, 3635840), (51584, 3631470), (52440, 3572192), (52630, 3559296), (53184, 3522220), (54015, 3468032), (54188, 3456960), (55614, 3368320), (55936, 3348930), (56544, 3312920), (56810, 3297408), (57040, 3284112), (57408, 3263060), (57616, 3251280), (59280, 3160016), (59520, 3147274), (61256, 3058080), (63156, 2966080), (63232, 2962515), (63710, 2940288), (64480, 2905176), (66480, 2817776), (67735, 2765568), (68172, 2747840), (68419, 2737920), (68448, 2736760), (68696, 2726880), (69920, 2679144), (70680, 2650336), (70912, 2641665), (71760, 2610448), (72020, 2601024), (72960, 2567513), (74152, 2526240), (75392, 2484690), (76452, 2450240), (76544, 2447295), (76570, 2446464), (77376, 2420980), (78945, 2372864), (79040, 2370012), (81282, 2304640), (82823, 2261760), (83904, 2232620), (84208, 2224560), (85215, 2198272), (85560, 2189408), (85870, 2181504), (86424, 2167520), (88320, 2120989), (88640, 2113332), (90896, 2060880), (91264, 2052570), (91884, 2038720), (92690, 2020992), (94240, 1987752), (94848, 1975010), (95565, 1960192), (95680, 1957836), (96720, 1936784), (101936, 1837680), (103044, 1817920), (103168, 1815735), (104880, 1786096), (105260, 1779648), (106368, 1761110), (108030, 1734016), (108376, 1728480), (111228, 1684160), (111631, 1678080), (111872, 1674465), (113088, 1656460), (113620, 1648704), (114080, 1642056), (114816, 1631530), (114855, 1630976), (115232, 1625640), (118560, 1580008), (119040, 1573637), (121049, 1547520), (122512, 1529040), (126312, 1483040), (127420, 1470144), (128805, 1454336), (128960, 1452588), (132960, 1408888), (135470, 1382784), (136344, 1373920), (136838, 1368960), (136896, 1368380), (137392, 1363440), (139035, 1347328), (139840, 1339572), (141360, 1325168), (143520, 1305224), (144040, 1300512), (148304, 1263120), (150784, 1242345), (152904, 1225120), (153140, 1223232), (154752, 1210490), (157890, 1186432), (158080, 1185006), (162564, 1152320), (163153, 1148160), (165646, 1130880), (167808, 1116310), (168416, 1112280), (170430, 1099136), (171120, 1094704), (171740, 1090752), (172848, 1083760), (176111, 1063680), (177280, 1056666), (181792, 1030440), (182528, 1026285), (183768, 1019360), (185380, 1010496), (188480, 993876), (189696, 987505), (191130, 980096), (191360, 978918), (193440, 968392), (197501, 948480), (203205, 921856), (203872, 918840), (205257, 912640), (206088, 908960), (209760, 893048), (210520, 889824), (212736, 880555), (216060, 867008), (216752, 864240), (222456, 842080), (223262, 839040), (226176, 828230), (227240, 824352), (228160, 821028), (229632, 815765), (229710, 815488), (230464, 812820), (237120, 790004), (242098, 773760), (245024, 764520), (248469, 753920), (252624, 741520), (254840, 735072), (257610, 727168), (257920, 726294), (265920, 704444), (270940, 691392), (272688, 686960), (273676, 684480), (273792, 684190), (274784, 681720), (278070, 673664), (279680, 669786), (282720, 662584), (287040, 652612), (288080, 650256), (296608, 631560), (305808, 612560), (306280, 611616), (309504, 605245), (315780, 593216), (316160, 592503), (325128, 576160), (326306, 574080), (331292, 565440), (334893, 559360), (335616, 558155), (336832, 556140), (340860, 549568), (342095, 547584), (342240, 547352), (343480, 545376), (345696, 541880), (352222, 531840), (354560, 528333), (363147, 515840), (363584, 515220), (367536, 509680), (370760, 505248), (376960, 496938), (382260, 490048), (382720, 489459), (386880, 484196), (395002, 474240), (406410, 460928), (407744, 459420), (410514, 456320), (412176, 454480), (414115, 452352), (419520, 446524), (421040, 444912), (432120, 433504)]このpageの処理時間: 0.804271936416626 seconds