About the Number

135067426560

135067426559 ← → 135067426561

2進数表記:1111101110010101001010101111100000000

漢数字表記:千三百五十億六千七百四十二万六千五百六十

素因数分解:

2 8 × 3 3 × 5 1 × 11 1 × 31 1 × 73 1 × 157 1

素因数の和:302
約数の個数: 1152
約数和(自身を含む): 550620241920
約数和(自身を除く): 415552815360

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 31, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 62, 64, 66, 72, 73, 80, 88, 90, 93, 96, 99, 108, 110, 120, 124, 128, 132, 135, 144, 146, 155, 157, 160, 165, 176, 180, 186, 192, 198, 216, 219, 220, 240, 248, 256, 264, 270, 279, 288, 292, 297, 310, 314, 320, 330, 341, 352, 360, 365, 372, 384, 396, 432, 438, 440, 465, 471, 480, 495, 496, 528, 540, 558, 576, 584, 594, 620, 628, 640, 657, 660, 682, 704, 720, 730, 744, 768, 785, 792, 803, 837, 864, 876, 880, 930, 942, 960, 990, 992, 1023, 1056, 1080, 1095, 1116, 1152, 1168, 1188, 1240, 1256, 1280, 1314, 1320, 1364, 1395, 1408, 1413, 1440, 1460, 1485, 1488, 1570, 1584, 1606, 1674, 1705, 1727, 1728, 1752, 1760, 1860, 1884, 1920, 1971, 1980, 1984, 2046, 2112, 2160, 2190, 2232, 2263, 2304, 2336, 2355, 2376, 2409, 2480, 2512, 2628, 2640, 2728, 2790, 2816, 2826, 2880, 2920, 2970, 2976, 3069, 3140, 3168, 3212, 3285, 3348, 3410, 3454, 3456, 3504, 3520, 3720, 3768, 3840, 3942, 3960, 3968, 4015, 4092, 4185, 4224, 4239, 4320, 4380, 4464, 4526, 4672, 4710, 4752, 4818, 4867, 4960, 5024, 5115, 5181, 5256, 5280, 5456, 5580, 5652, 5760, 5840, 5940, 5952, 6138, 6280, 6336, 6424, 6570, 6696, 6789, 6820, 6908, 6912, 7008, 7040, 7065, 7227, 7440, 7536, 7884, 7920, 7936, 8030, 8184, 8370, 8448, 8478, 8635, 8640, 8760, 8928, 9052, 9207, 9344, 9420, 9504, 9636, 9734, 9855, 9920, 10048, 10230, 10362, 10512, 10560, 10912, 11160, 11304, 11315, 11461, 11520, 11680, 11880, 11904, 12045, 12276, 12560, 12672, 12848, 13140, 13392, 13578, 13640, 13816, 14016, 14080, 14130, 14454, 14601, 14880, 15072, 15345, 15543, 15768, 15840, 16060, 16368, 16740, 16956, 17270, 17280, 17520, 17856, 18104, 18414, 18688, 18840, 19008, 19272, 19468, 19710, 19840, 20096, 20367, 20460, 20724, 21024, 21120, 21195, 21681, 21824, 22320, 22608, 22630, 22922, 23360, 23760, 23808, 24090, 24335, 24552, 24893, 25120, 25344, 25696, 25905, 26280, 26784, 27156, 27280, 27632, 28032, 28260, 28908, 29202, 29760, 30144, 30690, 31086, 31536, 31680, 32120, 32736, 33480, 33912, 33945, 34383, 34540, 34560, 35040, 35712, 36135, 36208, 36828, 37680, 38016, 38544, 38936, 39420, 39680, 40192, 40734, 40920, 41448, 42048, 42240, 42390, 43362, 43648, 43803, 44640, 45216, 45260, 45844, 46035, 46629, 46720, 47520, 48180, 48670, 49104, 49786, 50240, 51392, 51810, 52560, 53537, 53568, 54312, 54560, 55264, 56064, 56520, 57305, 57816, 58404, 59520, 60288, 61101, 61380, 62172, 63072, 63360, 64240, 65472, 66960, 67824, 67890, 68766, 69080, 70080, 71424, 72270, 72416, 73005, 73656, 74679, 75360, 76032, 77088, 77715, 77872, 78840, 81468, 81840, 82896, 84096, 84780, 86724, 87296, 87606, 89280, 90432, 90520, 91688, 92070, 93258, 93440, 95040, 96360, 97340, 98208, 99572, 100480, 101835, 102784, 103149, 103620, 105120, 107074, 107136, 108405, 108624, 109120, 110528, 113040, 114610, 115632, 116808, 119040, 120576, 122202, 122760, 124344, 124465, 126071, 126144, 126720, 128480, 130944, 131409, 133920, 135648, 135780, 137532, 138160, 140160, 144540, 144832, 146010, 147312, 149358, 150720, 154176, 155430, 155744, 157680, 160611, 162936, 163680, 165792, 168192, 169560, 171915, 173448, 175212, 178560, 180864, 181040, 183376, 184140, 186516, 190080, 192720, 194680, 196416, 199144, 200960, 203670, 205568, 206298, 207240, 210240, 214148, 214272, 216810, 217248, 218240, 219015, 221056, 224037, 226080, 229220, 231264, 233145, 233616, 244404, 245520, 248688, 248930, 252142, 252288, 256960, 261888, 262818, 267685, 267840, 271296, 271560, 275064, 276320, 280320, 289080, 289664, 292020, 294624, 298716, 301440, 305505, 308352, 309447, 310860, 311488, 315360, 321222, 325872, 327360, 331584, 339120, 343830, 346896, 350424, 355291, 357120, 361728, 362080, 366752, 368280, 373032, 373395, 378213, 380160, 385440, 389360, 392832, 398288, 407340, 412596, 414480, 420480, 428296, 433620, 434496, 436480, 438030, 442112, 448074, 452160, 458440, 462528, 466290, 467232, 481833, 488808, 491040, 497376, 497860, 504284, 504576, 513920, 515745, 525636, 535370, 535680, 542592, 543120, 550128, 552640, 578160, 579328, 584040, 589248, 597432, 602880, 611010, 616704, 618894, 621720, 622976, 630355, 630720, 642444, 651744, 654720, 657045, 663168, 672111, 678240, 687660, 693792, 700848, 710582, 724160, 733504, 736560, 746064, 746790, 756426, 770880, 778720, 785664, 796576, 803055, 814680, 825192, 828960, 840960, 856592, 867240, 868992, 876060, 896148, 904320, 916880, 925056, 932580, 934464, 963666, 977616, 982080, 994752, 995720, 1008568, 1027840, 1031490, 1051272, 1065873, 1070740, 1071360, 1085184, 1086240, 1100256, 1105280, 1120185, 1134639, 1156320, 1168080, 1178496, 1194864, 1222020, 1237788, 1243440, 1245952, 1260710, 1261440, 1284888, 1303488, 1309440, 1314090, 1326336, 1344222, 1356480, 1375320, 1387584, 1401696, 1421164, 1445499, 1448320, 1467008, 1473120, 1492128, 1493580, 1512852, 1541760, 1547235, 1557440, 1593152, 1606110, 1629360, 1650384, 1657920, 1713184, 1734480, 1737984, 1752120, 1776455, 1792296, 1808640, 1833760, 1850112, 1865160, 1868928, 1891065, 1927332, 1955232, 1964160, 1989504, 1991440, 2017136, 2062980, 2102544, 2131746, 2141480, 2172480, 2200512, 2210560, 2240370, 2269278, 2312640, 2336160, 2356992, 2389728, 2409165, 2444040, 2475576, 2486880, 2521420, 2522880, 2569776, 2606976, 2628180, 2688444, 2712960, 2750640, 2775168, 2803392, 2842328, 2890998, 2896640, 2934016, 2946240, 2984256, 2987160, 3025704, 3083520, 3094470, 3114880, 3186304, 3197619, 3212220, 3258720, 3300768, 3315840, 3360555, 3403917, 3426368, 3468960, 3504240, 3552910, 3584592, 3667520, 3730320, 3737856, 3782130, 3854664, 3908201, 3910464, 3928320, 3979008, 3982880, 4034272, 4125960, 4205088, 4263492, 4282960, 4344960, 4401024, 4480740, 4538556, 4625280, 4672320, 4779456, 4818330, 4888080, 4951152, 4973760, 5042840, 5139552, 5213952, 5256360, 5329365, 5376888, 5425920, 5501280, 5550336, 5606784, 5673195, 5684656, 5781996, 5892480, 5968512, 5974320, 6051408, 6188940, 6229760, 6372608, 6395238, 6424440, 6517440, 6601536, 6631680, 6721110, 6807834, 6852736, 6937920, 7008480, 7105820, 7169184, 7227495, 7335040, 7460640, 7564260, 7709328, 7816402, 7820928, 7965760, 8068544, 8251920, 8410176, 8526984, 8565920, 8689920, 8802048, 8961480, 9077112, 9250560, 9344640, 9558912, 9592857, 9636660, 9776160, 9902304, 9947520, 10085680, 10279104, 10512720, 10658730, 10753776, 11002560, 11213568, 11346390, 11369312, 11563992, 11724603, 11784960, 11937024, 11948640, 12102816, 12377880, 12790476, 12848880, 13034880, 13203072, 13442220, 13615668, 13705472, 13875840, 14016960, 14211640, 14338368, 14454990, 14670080, 14921280, 15128520, 15418656, 15632804, 15641856, 15931520, 15988095, 16137088, 16503840, 16820352, 17019585, 17053968, 17131840, 17922960, 18154224, 18689280, 19117824, 19185714, 19273320, 19541005, 19552320, 19804608, 19895040, 20171360, 20558208, 21025440, 21317460, 21507552, 22005120, 22692780, 22738624, 23127984, 23449206, 23897280, 24205632, 24755760, 25580952, 25697760, 26069760, 26406144, 26884440, 27231336, 27751680, 28033920, 28423280, 28676736, 28909980, 29842560, 30257040, 30837312, 31265608, 31863040, 31976190, 32274176, 33007680, 33640704, 34039170, 34107936, 34263680, 35173809, 35845920, 36308448, 38371428, 38546640, 39082010, 39104640, 39609216, 40342720, 41116416, 42050880, 42634920, 43015104, 44010240, 45385560, 45477248, 46255968, 46898412, 47794560, 47964285, 48411264, 49511520, 51161904, 51395520, 53768880, 54462672, 56067840, 56846560, 57353472, 57819960, 58623015, 59685120, 60514080, 61674624, 62531216, 63952380, 66015360, 68078340, 68215872, 68527360, 70347618, 71691840, 72616896, 76742856, 77093280, 78164020, 78209280, 79218432, 80685440, 84101760, 85269840, 86030208, 90771120, 90954496, 92511936, 93796824, 95589120, 95928570, 96822528, 99023040, 102323808, 102791040, 105521427, 107537760, 108925344, 113693120, 115639920, 117246030, 121028160, 123349248, 125062432, 127904760, 132030720, 136156680, 136431744, 140695236, 143383680, 145233792, 153485712, 154186560, 156328040, 161370880, 168203520, 170539680, 172060416, 175869045, 181542240, 185023872, 187593648, 191857140, 198046080, 204647616, 205582080, 211042854, 215075520, 217850688, 227386240, 231279840, 234492060, 242056320, 250124864, 255809520, 272313360, 272863488, 281390472, 286767360, 290467584, 306971424, 308373120, 312656080, 341079360, 351738090, 363084480, 370047744, 375187296, 383714280, 396092160, 409295232, 422085708, 430151040, 435701376, 454772480, 462559680, 468984120, 484112640, 500249728, 511619040, 527607135, 544626720, 562780944, 613942848, 616746240, 625312160, 682158720, 703476180, 726168960, 750374592, 767428560, 818590464, 844171416, 860302080, 871402752, 925119360, 937968240, 1000499456, 1023238080, 1055214270, 1089253440, 1125561888, 1227885696, 1250624320, 1364317440, 1406952360, 1452337920, 1500749184, 1534857120, 1688342832, 1850238720, 1875936480, 2046476160, 2110428540, 2178506880, 2251123776, 2455771392, 2501248640, 2813904720, 3001498368, 3069714240, 3376685664, 3751872960, 4092952320, 4220857080, 4357013760, 4502247552, 5002497280, 5627809440, 6139428480, 6753371328, 7503745920, 8441714160, 9004495104, 11255618880, 12278856960, 13506742656, 15007491840, 16883428320, 22511237760, 27013485312, 33766856640, 45022475520, 67533713280, 135067426560]

約数ペア:
[(1, 135067426560), (2, 67533713280), (3, 45022475520), (4, 33766856640), (5, 27013485312), (6, 22511237760), (8, 16883428320), (9, 15007491840), (10, 13506742656), (11, 12278856960), (12, 11255618880), (15, 9004495104), (16, 8441714160), (18, 7503745920), (20, 6753371328), (22, 6139428480), (24, 5627809440), (27, 5002497280), (30, 4502247552), (31, 4357013760), (32, 4220857080), (33, 4092952320), (36, 3751872960), (40, 3376685664), (44, 3069714240), (45, 3001498368), (48, 2813904720), (54, 2501248640), (55, 2455771392), (60, 2251123776), (62, 2178506880), (64, 2110428540), (66, 2046476160), (72, 1875936480), (73, 1850238720), (80, 1688342832), (88, 1534857120), (90, 1500749184), (93, 1452337920), (96, 1406952360), (99, 1364317440), (108, 1250624320), (110, 1227885696), (120, 1125561888), (124, 1089253440), (128, 1055214270), (132, 1023238080), (135, 1000499456), (144, 937968240), (146, 925119360), (155, 871402752), (157, 860302080), (160, 844171416), (165, 818590464), (176, 767428560), (180, 750374592), (186, 726168960), (192, 703476180), (198, 682158720), (216, 625312160), (219, 616746240), (220, 613942848), (240, 562780944), (248, 544626720), (256, 527607135), (264, 511619040), (270, 500249728), (279, 484112640), (288, 468984120), (292, 462559680), (297, 454772480), (310, 435701376), (314, 430151040), (320, 422085708), (330, 409295232), (341, 396092160), (352, 383714280), (360, 375187296), (365, 370047744), (372, 363084480), (384, 351738090), (396, 341079360), (432, 312656080), (438, 308373120), (440, 306971424), (465, 290467584), (471, 286767360), (480, 281390472), (495, 272863488), (496, 272313360), (528, 255809520), (540, 250124864), (558, 242056320), (576, 234492060), (584, 231279840), (594, 227386240), (620, 217850688), (628, 215075520), (640, 211042854), (657, 205582080), (660, 204647616), (682, 198046080), (704, 191857140), (720, 187593648), (730, 185023872), (744, 181542240), (768, 175869045), (785, 172060416), (792, 170539680), (803, 168203520), (837, 161370880), (864, 156328040), (876, 154186560), (880, 153485712), (930, 145233792), (942, 143383680), (960, 140695236), (990, 136431744), (992, 136156680), (1023, 132030720), (1056, 127904760), (1080, 125062432), (1095, 123349248), (1116, 121028160), (1152, 117246030), (1168, 115639920), (1188, 113693120), (1240, 108925344), (1256, 107537760), (1280, 105521427), (1314, 102791040), (1320, 102323808), (1364, 99023040), (1395, 96822528), (1408, 95928570), (1413, 95589120), (1440, 93796824), (1460, 92511936), (1485, 90954496), (1488, 90771120), (1570, 86030208), (1584, 85269840), (1606, 84101760), (1674, 80685440), (1705, 79218432), (1727, 78209280), (1728, 78164020), (1752, 77093280), (1760, 76742856), (1860, 72616896), (1884, 71691840), (1920, 70347618), (1971, 68527360), (1980, 68215872), (1984, 68078340), (2046, 66015360), (2112, 63952380), (2160, 62531216), (2190, 61674624), (2232, 60514080), (2263, 59685120), (2304, 58623015), (2336, 57819960), (2355, 57353472), (2376, 56846560), (2409, 56067840), (2480, 54462672), (2512, 53768880), (2628, 51395520), (2640, 51161904), (2728, 49511520), (2790, 48411264), (2816, 47964285), (2826, 47794560), (2880, 46898412), (2920, 46255968), (2970, 45477248), (2976, 45385560), (3069, 44010240), (3140, 43015104), (3168, 42634920), (3212, 42050880), (3285, 41116416), (3348, 40342720), (3410, 39609216), (3454, 39104640), (3456, 39082010), (3504, 38546640), (3520, 38371428), (3720, 36308448), (3768, 35845920), (3840, 35173809), (3942, 34263680), (3960, 34107936), (3968, 34039170), (4015, 33640704), (4092, 33007680), (4185, 32274176), (4224, 31976190), (4239, 31863040), (4320, 31265608), (4380, 30837312), (4464, 30257040), (4526, 29842560), (4672, 28909980), (4710, 28676736), (4752, 28423280), (4818, 28033920), (4867, 27751680), (4960, 27231336), (5024, 26884440), (5115, 26406144), (5181, 26069760), (5256, 25697760), (5280, 25580952), (5456, 24755760), (5580, 24205632), (5652, 23897280), (5760, 23449206), (5840, 23127984), (5940, 22738624), (5952, 22692780), (6138, 22005120), (6280, 21507552), (6336, 21317460), (6424, 21025440), (6570, 20558208), (6696, 20171360), (6789, 19895040), (6820, 19804608), (6908, 19552320), (6912, 19541005), (7008, 19273320), (7040, 19185714), (7065, 19117824), (7227, 18689280), (7440, 18154224), (7536, 17922960), (7884, 17131840), (7920, 17053968), (7936, 17019585), (8030, 16820352), (8184, 16503840), (8370, 16137088), (8448, 15988095), (8478, 15931520), (8635, 15641856), (8640, 15632804), (8760, 15418656), (8928, 15128520), (9052, 14921280), (9207, 14670080), (9344, 14454990), (9420, 14338368), (9504, 14211640), (9636, 14016960), (9734, 13875840), (9855, 13705472), (9920, 13615668), (10048, 13442220), (10230, 13203072), (10362, 13034880), (10512, 12848880), (10560, 12790476), (10912, 12377880), (11160, 12102816), (11304, 11948640), (11315, 11937024), (11461, 11784960), (11520, 11724603), (11680, 11563992), (11880, 11369312), (11904, 11346390), (12045, 11213568), (12276, 11002560), (12560, 10753776), (12672, 10658730), (12848, 10512720), (13140, 10279104), (13392, 10085680), (13578, 9947520), (13640, 9902304), (13816, 9776160), (14016, 9636660), (14080, 9592857), (14130, 9558912), (14454, 9344640), (14601, 9250560), (14880, 9077112), (15072, 8961480), (15345, 8802048), (15543, 8689920), (15768, 8565920), (15840, 8526984), (16060, 8410176), (16368, 8251920), (16740, 8068544), (16956, 7965760), (17270, 7820928), (17280, 7816402), (17520, 7709328), (17856, 7564260), (18104, 7460640), (18414, 7335040), (18688, 7227495), (18840, 7169184), (19008, 7105820), (19272, 7008480), (19468, 6937920), (19710, 6852736), (19840, 6807834), (20096, 6721110), (20367, 6631680), (20460, 6601536), (20724, 6517440), (21024, 6424440), (21120, 6395238), (21195, 6372608), (21681, 6229760), (21824, 6188940), (22320, 6051408), (22608, 5974320), (22630, 5968512), (22922, 5892480), (23360, 5781996), (23760, 5684656), (23808, 5673195), (24090, 5606784), (24335, 5550336), (24552, 5501280), (24893, 5425920), (25120, 5376888), (25344, 5329365), (25696, 5256360), (25905, 5213952), (26280, 5139552), (26784, 5042840), (27156, 4973760), (27280, 4951152), (27632, 4888080), (28032, 4818330), (28260, 4779456), (28908, 4672320), (29202, 4625280), (29760, 4538556), (30144, 4480740), (30690, 4401024), (31086, 4344960), (31536, 4282960), (31680, 4263492), (32120, 4205088), (32736, 4125960), (33480, 4034272), (33912, 3982880), (33945, 3979008), (34383, 3928320), (34540, 3910464), (34560, 3908201), (35040, 3854664), (35712, 3782130), (36135, 3737856), (36208, 3730320), (36828, 3667520), (37680, 3584592), (38016, 3552910), (38544, 3504240), (38936, 3468960), (39420, 3426368), (39680, 3403917), (40192, 3360555), (40734, 3315840), (40920, 3300768), (41448, 3258720), (42048, 3212220), (42240, 3197619), (42390, 3186304), (43362, 3114880), (43648, 3094470), (43803, 3083520), (44640, 3025704), (45216, 2987160), (45260, 2984256), (45844, 2946240), (46035, 2934016), (46629, 2896640), (46720, 2890998), (47520, 2842328), (48180, 2803392), (48670, 2775168), (49104, 2750640), (49786, 2712960), (50240, 2688444), (51392, 2628180), (51810, 2606976), (52560, 2569776), (53537, 2522880), (53568, 2521420), (54312, 2486880), (54560, 2475576), (55264, 2444040), (56064, 2409165), (56520, 2389728), (57305, 2356992), (57816, 2336160), (58404, 2312640), (59520, 2269278), (60288, 2240370), (61101, 2210560), (61380, 2200512), (62172, 2172480), (63072, 2141480), (63360, 2131746), (64240, 2102544), (65472, 2062980), (66960, 2017136), (67824, 1991440), (67890, 1989504), (68766, 1964160), (69080, 1955232), (70080, 1927332), (71424, 1891065), (72270, 1868928), (72416, 1865160), (73005, 1850112), (73656, 1833760), (74679, 1808640), (75360, 1792296), (76032, 1776455), (77088, 1752120), (77715, 1737984), (77872, 1734480), (78840, 1713184), (81468, 1657920), (81840, 1650384), (82896, 1629360), (84096, 1606110), (84780, 1593152), (86724, 1557440), (87296, 1547235), (87606, 1541760), (89280, 1512852), (90432, 1493580), (90520, 1492128), (91688, 1473120), (92070, 1467008), (93258, 1448320), (93440, 1445499), (95040, 1421164), (96360, 1401696), (97340, 1387584), (98208, 1375320), (99572, 1356480), (100480, 1344222), (101835, 1326336), (102784, 1314090), (103149, 1309440), (103620, 1303488), (105120, 1284888), (107074, 1261440), (107136, 1260710), (108405, 1245952), (108624, 1243440), (109120, 1237788), (110528, 1222020), (113040, 1194864), (114610, 1178496), (115632, 1168080), (116808, 1156320), (119040, 1134639), (120576, 1120185), (122202, 1105280), (122760, 1100256), (124344, 1086240), (124465, 1085184), (126071, 1071360), (126144, 1070740), (126720, 1065873), (128480, 1051272), (130944, 1031490), (131409, 1027840), (133920, 1008568), (135648, 995720), (135780, 994752), (137532, 982080), (138160, 977616), (140160, 963666), (144540, 934464), (144832, 932580), (146010, 925056), (147312, 916880), (149358, 904320), (150720, 896148), (154176, 876060), (155430, 868992), (155744, 867240), (157680, 856592), (160611, 840960), (162936, 828960), (163680, 825192), (165792, 814680), (168192, 803055), (169560, 796576), (171915, 785664), (173448, 778720), (175212, 770880), (178560, 756426), (180864, 746790), (181040, 746064), (183376, 736560), (184140, 733504), (186516, 724160), (190080, 710582), (192720, 700848), (194680, 693792), (196416, 687660), (199144, 678240), (200960, 672111), (203670, 663168), (205568, 657045), (206298, 654720), (207240, 651744), (210240, 642444), (214148, 630720), (214272, 630355), (216810, 622976), (217248, 621720), (218240, 618894), (219015, 616704), (221056, 611010), (224037, 602880), (226080, 597432), (229220, 589248), (231264, 584040), (233145, 579328), (233616, 578160), (244404, 552640), (245520, 550128), (248688, 543120), (248930, 542592), (252142, 535680), (252288, 535370), (256960, 525636), (261888, 515745), (262818, 513920), (267685, 504576), (267840, 504284), (271296, 497860), (271560, 497376), (275064, 491040), (276320, 488808), (280320, 481833), (289080, 467232), (289664, 466290), (292020, 462528), (294624, 458440), (298716, 452160), (301440, 448074), (305505, 442112), (308352, 438030), (309447, 436480), (310860, 434496), (311488, 433620), (315360, 428296), (321222, 420480), (325872, 414480), (327360, 412596), (331584, 407340), (339120, 398288), (343830, 392832), (346896, 389360), (350424, 385440), (355291, 380160), (357120, 378213), (361728, 373395), (362080, 373032), (366752, 368280)]

このpageの処理時間: 1.5818727016448975 seconds