About the Number
188890859520
2進数表記:10101111111010110001011100100000000000
漢数字表記:千八百八十八億九千八十五万九千五百二十
素因数分解:
素因数の和:223
約数の個数: 1152
約数和(自身を含む): 758979486720
約数和(自身を除く): 570088627200
約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 64, 66, 67, 72, 80, 81, 88, 90, 96, 99, 103, 108, 110, 120, 128, 132, 134, 135, 144, 160, 162, 165, 176, 180, 192, 198, 201, 206, 216, 220, 240, 243, 256, 264, 268, 270, 288, 297, 309, 320, 324, 330, 335, 352, 360, 384, 396, 402, 405, 412, 432, 440, 480, 486, 495, 512, 515, 528, 536, 540, 576, 594, 603, 618, 640, 648, 660, 670, 704, 720, 737, 768, 792, 804, 810, 824, 864, 880, 891, 927, 960, 972, 990, 1005, 1024, 1030, 1056, 1072, 1080, 1133, 1152, 1188, 1206, 1215, 1236, 1280, 1296, 1320, 1340, 1408, 1440, 1474, 1485, 1536, 1545, 1584, 1608, 1620, 1648, 1728, 1760, 1782, 1809, 1854, 1920, 1944, 1980, 2010, 2048, 2060, 2112, 2144, 2160, 2211, 2266, 2304, 2376, 2412, 2430, 2472, 2560, 2592, 2640, 2673, 2680, 2781, 2816, 2880, 2948, 2970, 3015, 3072, 3090, 3168, 3216, 3240, 3296, 3399, 3456, 3520, 3564, 3618, 3685, 3708, 3840, 3888, 3960, 4020, 4120, 4224, 4288, 4320, 4422, 4455, 4532, 4608, 4635, 4752, 4824, 4860, 4944, 5120, 5184, 5280, 5346, 5360, 5427, 5562, 5632, 5665, 5760, 5896, 5940, 6030, 6144, 6180, 6336, 6432, 6480, 6592, 6633, 6798, 6901, 6912, 7040, 7128, 7236, 7370, 7416, 7680, 7776, 7920, 8040, 8240, 8343, 8448, 8576, 8640, 8844, 8910, 9045, 9064, 9216, 9270, 9504, 9648, 9720, 9888, 10197, 10240, 10368, 10560, 10692, 10720, 10854, 11055, 11124, 11264, 11330, 11520, 11792, 11880, 12060, 12360, 12672, 12864, 12960, 13184, 13266, 13365, 13596, 13802, 13824, 13905, 14080, 14256, 14472, 14740, 14832, 15360, 15552, 15840, 16080, 16281, 16480, 16686, 16896, 16995, 17152, 17280, 17688, 17820, 18090, 18128, 18432, 18540, 19008, 19296, 19440, 19776, 19899, 20394, 20703, 20736, 21120, 21384, 21440, 21708, 22110, 22248, 22528, 22660, 23040, 23584, 23760, 24120, 24720, 25029, 25344, 25728, 25920, 26368, 26532, 26730, 27135, 27192, 27604, 27648, 27810, 28160, 28512, 28944, 29480, 29664, 30591, 30720, 31104, 31680, 32160, 32562, 32960, 33165, 33372, 33792, 33990, 34304, 34505, 34560, 35376, 35640, 36180, 36256, 37080, 38016, 38592, 38880, 39552, 39798, 40788, 41406, 41472, 41715, 42240, 42768, 42880, 43416, 44220, 44496, 45320, 46080, 47168, 47520, 48240, 49440, 50058, 50688, 50985, 51456, 51840, 52736, 53064, 53460, 54270, 54384, 55208, 55296, 55620, 56320, 57024, 57888, 58960, 59328, 59697, 61182, 62109, 62208, 63360, 64320, 65124, 65920, 66330, 66744, 67584, 67980, 68608, 69010, 69120, 70752, 71280, 72360, 72512, 74160, 75911, 76032, 77184, 77760, 79104, 79596, 81405, 81576, 82812, 82944, 83430, 84480, 85536, 85760, 86832, 88440, 88992, 90640, 91773, 92160, 94336, 95040, 96480, 98880, 99495, 100116, 101376, 101970, 102912, 103515, 103680, 105472, 106128, 106920, 108540, 108768, 110416, 111240, 112640, 114048, 115776, 117920, 118656, 119394, 122364, 124218, 124416, 125145, 126720, 128640, 130248, 131840, 132660, 133488, 135960, 137216, 138020, 138240, 141504, 142560, 144720, 145024, 148320, 151822, 152064, 152955, 154368, 155520, 158208, 159192, 162810, 163152, 165624, 165888, 166860, 168960, 171072, 171520, 173664, 176880, 177984, 179091, 181280, 183546, 186327, 188672, 190080, 192960, 197760, 198990, 200232, 202752, 203940, 205824, 207030, 207360, 210944, 212256, 213840, 217080, 217536, 220832, 222480, 227733, 228096, 231552, 235840, 237312, 238788, 244728, 248436, 248832, 250290, 253440, 257280, 260496, 263680, 265320, 266976, 271920, 275319, 276040, 276480, 283008, 285120, 289440, 290048, 296640, 298485, 303644, 304128, 305910, 308736, 310545, 311040, 316416, 318384, 325620, 326304, 331248, 333720, 337920, 342144, 343040, 347328, 353760, 355968, 358182, 362560, 367092, 372654, 377344, 379555, 380160, 385920, 395520, 397980, 400464, 407880, 411648, 414060, 414720, 424512, 427680, 434160, 435072, 441664, 444960, 455466, 456192, 458865, 463104, 471680, 474624, 477576, 489456, 496872, 497664, 500580, 506880, 514560, 520992, 527360, 530640, 533952, 543840, 550638, 552080, 558981, 566016, 570240, 578880, 580096, 593280, 596970, 607288, 608256, 611820, 617472, 621090, 622080, 632832, 636768, 651240, 652608, 662496, 667440, 683199, 684288, 686080, 694656, 707520, 711936, 716364, 725120, 734184, 745308, 754688, 759110, 760320, 771840, 791040, 795960, 800928, 815760, 828120, 829440, 849024, 855360, 868320, 870144, 883328, 889920, 895455, 910932, 912384, 917730, 926208, 931635, 943360, 949248, 955152, 978912, 993744, 1001160, 1013760, 1029120, 1041984, 1054720, 1061280, 1067904, 1087680, 1101276, 1104160, 1117962, 1132032, 1138665, 1140480, 1157760, 1160192, 1186560, 1193940, 1214576, 1223640, 1234944, 1242180, 1244160, 1273536, 1302480, 1305216, 1324992, 1334880, 1366398, 1368576, 1376595, 1389312, 1415040, 1423872, 1432728, 1450240, 1468368, 1490616, 1509376, 1518220, 1520640, 1543680, 1582080, 1591920, 1601856, 1631520, 1656240, 1676943, 1698048, 1710720, 1736640, 1740288, 1766656, 1779840, 1790910, 1821864, 1824768, 1835460, 1852416, 1863270, 1886720, 1898496, 1910304, 1957824, 1987488, 2002320, 2049597, 2058240, 2083968, 2122560, 2135808, 2175360, 2202552, 2208320, 2235924, 2264064, 2277330, 2280960, 2315520, 2320384, 2373120, 2387880, 2429152, 2447280, 2484360, 2488320, 2547072, 2604960, 2610432, 2649984, 2669760, 2732796, 2737152, 2753190, 2778624, 2794905, 2830080, 2847744, 2865456, 2900480, 2936736, 2981232, 3036440, 3041280, 3087360, 3164160, 3183840, 3203712, 3263040, 3312480, 3353886, 3396096, 3415995, 3421440, 3473280, 3480576, 3533312, 3559680, 3581820, 3643728, 3670920, 3704832, 3726540, 3773440, 3820608, 3915648, 3974976, 4004640, 4099194, 4167936, 4245120, 4271616, 4350720, 4405104, 4416640, 4471848, 4528128, 4554660, 4561920, 4631040, 4746240, 4775760, 4858304, 4894560, 4968720, 5094144, 5209920, 5220864, 5299968, 5339520, 5465592, 5474304, 5506380, 5557248, 5589810, 5660160, 5695488, 5730912, 5800960, 5873472, 5962464, 6072880, 6148791, 6174720, 6367680, 6407424, 6526080, 6624960, 6707772, 6792192, 6831990, 6842880, 6946560, 6961152, 7066624, 7119360, 7163640, 7287456, 7341840, 7453080, 7546880, 7641216, 7831296, 7949952, 8009280, 8198388, 8335872, 8384715, 8490240, 8543232, 8701440, 8810208, 8833280, 8943696, 9109320, 9123840, 9262080, 9492480, 9551520, 9716608, 9789120, 9937440, 10188288, 10247985, 10419840, 10441728, 10599936, 10679040, 10931184, 11012760, 11114496, 11179620, 11320320, 11461824, 11601920, 11746944, 11924928, 12145760, 12297582, 12735360, 12814848, 13052160, 13249920, 13415544, 13584384, 13663980, 13685760, 13893120, 14133248, 14238720, 14327280, 14574912, 14683680, 14906160, 15282432, 15662592, 15899904, 16018560, 16396776, 16671744, 16769430, 16980480, 17086464, 17402880, 17620416, 17666560, 17887392, 18218640, 18446373, 18524160, 19103040, 19433216, 19578240, 19874880, 20376576, 20495970, 20839680, 20883456, 21199872, 21358080, 21862368, 22025520, 22359240, 22640640, 22923648, 23493888, 23849856, 24291520, 24595164, 25470720, 25629696, 26104320, 26499840, 26831088, 27327960, 27371520, 27786240, 28477440, 28654560, 29149824, 29367360, 29812320, 30564864, 30743955, 31325184, 31799808, 32037120, 32793552, 33343488, 33538860, 33960960, 34805760, 35240832, 35333120, 35774784, 36437280, 36892746, 38206080, 38866432, 39156480, 39749760, 40753152, 40991940, 41679360, 42399744, 42716160, 43724736, 44051040, 44718480, 45847296, 46987776, 47699712, 48583040, 49190328, 50941440, 51259392, 52208640, 52999680, 53662176, 54655920, 55572480, 57309120, 58299648, 58734720, 59624640, 61129728, 61487910, 62650368, 63599616, 64074240, 65587104, 67077720, 67921920, 70481664, 70666240, 71549568, 72874560, 73785492, 76412160, 77732864, 78312960, 79499520, 81983880, 83358720, 85432320, 87449472, 88102080, 89436960, 91694592, 92231865, 93975552, 95399424, 97166080, 98380656, 101882880, 104417280, 105999360, 107324352, 109311840, 114618240, 116599296, 117469440, 119249280, 122259456, 122975820, 127199232, 128148480, 131174208, 134155440, 140963328, 143099136, 145749120, 147570984, 152824320, 155465728, 156625920, 158999040, 163967760, 166717440, 174898944, 176204160, 178873920, 183389184, 184463730, 187951104, 190798848, 194332160, 196761312, 203765760, 211998720, 214648704, 218623680, 229236480, 233198592, 234938880, 238498560, 245951640, 256296960, 262348416, 268310880, 281926656, 286198272, 291498240, 295141968, 305648640, 313251840, 317998080, 327935520, 349797888, 352408320, 357747840, 366778368, 368927460, 381597696, 388664320, 393522624, 429297408, 437247360, 458472960, 466397184, 469877760, 476997120, 491903280, 524696832, 536621760, 563853312, 572396544, 582996480, 590283936, 611297280, 635996160, 655871040, 699595776, 704816640, 715495680, 737854920, 777328640, 787045248, 858594816, 874494720, 916945920, 939755520, 953994240, 983806560, 1049393664, 1073243520, 1144793088, 1165992960, 1180567872, 1311742080, 1399191552, 1409633280, 1430991360, 1475709840, 1574090496, 1717189632, 1748989440, 1833891840, 1907988480, 1967613120, 2098787328, 2146487040, 2331985920, 2361135744, 2623484160, 2819266560, 2861982720, 2951419680, 3148180992, 3434379264, 3497978880, 3935226240, 4197574656, 4292974080, 4722271488, 5246968320, 5723965440, 5902839360, 6296361984, 6995957760, 7870452480, 8585948160, 9444542976, 10493936640, 11805678720, 12592723968, 15740904960, 17171896320, 18889085952, 20987873280, 23611357440, 31481809920, 37778171904, 47222714880, 62963619840, 94445429760, 188890859520]
約数ペア:
[(1, 188890859520), (2, 94445429760), (3, 62963619840), (4, 47222714880), (5, 37778171904), (6, 31481809920), (8, 23611357440), (9, 20987873280), (10, 18889085952), (11, 17171896320), (12, 15740904960), (15, 12592723968), (16, 11805678720), (18, 10493936640), (20, 9444542976), (22, 8585948160), (24, 7870452480), (27, 6995957760), (30, 6296361984), (32, 5902839360), (33, 5723965440), (36, 5246968320), (40, 4722271488), (44, 4292974080), (45, 4197574656), (48, 3935226240), (54, 3497978880), (55, 3434379264), (60, 3148180992), (64, 2951419680), (66, 2861982720), (67, 2819266560), (72, 2623484160), (80, 2361135744), (81, 2331985920), (88, 2146487040), (90, 2098787328), (96, 1967613120), (99, 1907988480), (103, 1833891840), (108, 1748989440), (110, 1717189632), (120, 1574090496), (128, 1475709840), (132, 1430991360), (134, 1409633280), (135, 1399191552), (144, 1311742080), (160, 1180567872), (162, 1165992960), (165, 1144793088), (176, 1073243520), (180, 1049393664), (192, 983806560), (198, 953994240), (201, 939755520), (206, 916945920), (216, 874494720), (220, 858594816), (240, 787045248), (243, 777328640), (256, 737854920), (264, 715495680), (268, 704816640), (270, 699595776), (288, 655871040), (297, 635996160), (309, 611297280), (320, 590283936), (324, 582996480), (330, 572396544), (335, 563853312), (352, 536621760), (360, 524696832), (384, 491903280), (396, 476997120), (402, 469877760), (405, 466397184), (412, 458472960), (432, 437247360), (440, 429297408), (480, 393522624), (486, 388664320), (495, 381597696), (512, 368927460), (515, 366778368), (528, 357747840), (536, 352408320), (540, 349797888), (576, 327935520), (594, 317998080), (603, 313251840), (618, 305648640), (640, 295141968), (648, 291498240), (660, 286198272), (670, 281926656), (704, 268310880), (720, 262348416), (737, 256296960), (768, 245951640), (792, 238498560), (804, 234938880), (810, 233198592), (824, 229236480), (864, 218623680), (880, 214648704), (891, 211998720), (927, 203765760), (960, 196761312), (972, 194332160), (990, 190798848), (1005, 187951104), (1024, 184463730), (1030, 183389184), (1056, 178873920), (1072, 176204160), (1080, 174898944), (1133, 166717440), (1152, 163967760), (1188, 158999040), (1206, 156625920), (1215, 155465728), (1236, 152824320), (1280, 147570984), (1296, 145749120), (1320, 143099136), (1340, 140963328), (1408, 134155440), (1440, 131174208), (1474, 128148480), (1485, 127199232), (1536, 122975820), (1545, 122259456), (1584, 119249280), (1608, 117469440), (1620, 116599296), (1648, 114618240), (1728, 109311840), (1760, 107324352), (1782, 105999360), (1809, 104417280), (1854, 101882880), (1920, 98380656), (1944, 97166080), (1980, 95399424), (2010, 93975552), (2048, 92231865), (2060, 91694592), (2112, 89436960), (2144, 88102080), (2160, 87449472), (2211, 85432320), (2266, 83358720), (2304, 81983880), (2376, 79499520), (2412, 78312960), (2430, 77732864), (2472, 76412160), (2560, 73785492), (2592, 72874560), (2640, 71549568), (2673, 70666240), (2680, 70481664), (2781, 67921920), (2816, 67077720), (2880, 65587104), (2948, 64074240), (2970, 63599616), (3015, 62650368), (3072, 61487910), (3090, 61129728), (3168, 59624640), (3216, 58734720), (3240, 58299648), (3296, 57309120), (3399, 55572480), (3456, 54655920), (3520, 53662176), (3564, 52999680), (3618, 52208640), (3685, 51259392), (3708, 50941440), (3840, 49190328), (3888, 48583040), (3960, 47699712), (4020, 46987776), (4120, 45847296), (4224, 44718480), (4288, 44051040), (4320, 43724736), (4422, 42716160), (4455, 42399744), (4532, 41679360), (4608, 40991940), (4635, 40753152), (4752, 39749760), (4824, 39156480), (4860, 38866432), (4944, 38206080), (5120, 36892746), (5184, 36437280), (5280, 35774784), (5346, 35333120), (5360, 35240832), (5427, 34805760), (5562, 33960960), (5632, 33538860), (5665, 33343488), (5760, 32793552), (5896, 32037120), (5940, 31799808), (6030, 31325184), (6144, 30743955), (6180, 30564864), (6336, 29812320), (6432, 29367360), (6480, 29149824), (6592, 28654560), (6633, 28477440), (6798, 27786240), (6901, 27371520), (6912, 27327960), (7040, 26831088), (7128, 26499840), (7236, 26104320), (7370, 25629696), (7416, 25470720), (7680, 24595164), (7776, 24291520), (7920, 23849856), (8040, 23493888), (8240, 22923648), (8343, 22640640), (8448, 22359240), (8576, 22025520), (8640, 21862368), (8844, 21358080), (8910, 21199872), (9045, 20883456), (9064, 20839680), (9216, 20495970), (9270, 20376576), (9504, 19874880), (9648, 19578240), (9720, 19433216), (9888, 19103040), (10197, 18524160), (10240, 18446373), (10368, 18218640), (10560, 17887392), (10692, 17666560), (10720, 17620416), (10854, 17402880), (11055, 17086464), (11124, 16980480), (11264, 16769430), (11330, 16671744), (11520, 16396776), (11792, 16018560), (11880, 15899904), (12060, 15662592), (12360, 15282432), (12672, 14906160), (12864, 14683680), (12960, 14574912), (13184, 14327280), (13266, 14238720), (13365, 14133248), (13596, 13893120), (13802, 13685760), (13824, 13663980), (13905, 13584384), (14080, 13415544), (14256, 13249920), (14472, 13052160), (14740, 12814848), (14832, 12735360), (15360, 12297582), (15552, 12145760), (15840, 11924928), (16080, 11746944), (16281, 11601920), (16480, 11461824), (16686, 11320320), (16896, 11179620), (16995, 11114496), (17152, 11012760), (17280, 10931184), (17688, 10679040), (17820, 10599936), (18090, 10441728), (18128, 10419840), (18432, 10247985), (18540, 10188288), (19008, 9937440), (19296, 9789120), (19440, 9716608), (19776, 9551520), (19899, 9492480), (20394, 9262080), (20703, 9123840), (20736, 9109320), (21120, 8943696), (21384, 8833280), (21440, 8810208), (21708, 8701440), (22110, 8543232), (22248, 8490240), (22528, 8384715), (22660, 8335872), (23040, 8198388), (23584, 8009280), (23760, 7949952), (24120, 7831296), (24720, 7641216), (25029, 7546880), (25344, 7453080), (25728, 7341840), (25920, 7287456), (26368, 7163640), (26532, 7119360), (26730, 7066624), (27135, 6961152), (27192, 6946560), (27604, 6842880), (27648, 6831990), (27810, 6792192), (28160, 6707772), (28512, 6624960), (28944, 6526080), (29480, 6407424), (29664, 6367680), (30591, 6174720), (30720, 6148791), (31104, 6072880), (31680, 5962464), (32160, 5873472), (32562, 5800960), (32960, 5730912), (33165, 5695488), (33372, 5660160), (33792, 5589810), (33990, 5557248), (34304, 5506380), (34505, 5474304), (34560, 5465592), (35376, 5339520), (35640, 5299968), (36180, 5220864), (36256, 5209920), (37080, 5094144), (38016, 4968720), (38592, 4894560), (38880, 4858304), (39552, 4775760), (39798, 4746240), (40788, 4631040), (41406, 4561920), (41472, 4554660), (41715, 4528128), (42240, 4471848), (42768, 4416640), (42880, 4405104), (43416, 4350720), (44220, 4271616), (44496, 4245120), (45320, 4167936), (46080, 4099194), (47168, 4004640), (47520, 3974976), (48240, 3915648), (49440, 3820608), (50058, 3773440), (50688, 3726540), (50985, 3704832), (51456, 3670920), (51840, 3643728), (52736, 3581820), (53064, 3559680), (53460, 3533312), (54270, 3480576), (54384, 3473280), (55208, 3421440), (55296, 3415995), (55620, 3396096), (56320, 3353886), (57024, 3312480), (57888, 3263040), (58960, 3203712), (59328, 3183840), (59697, 3164160), (61182, 3087360), (62109, 3041280), (62208, 3036440), (63360, 2981232), (64320, 2936736), (65124, 2900480), (65920, 2865456), (66330, 2847744), (66744, 2830080), (67584, 2794905), (67980, 2778624), (68608, 2753190), (69010, 2737152), (69120, 2732796), (70752, 2669760), (71280, 2649984), (72360, 2610432), (72512, 2604960), (74160, 2547072), (75911, 2488320), (76032, 2484360), (77184, 2447280), (77760, 2429152), (79104, 2387880), (79596, 2373120), (81405, 2320384), (81576, 2315520), (82812, 2280960), (82944, 2277330), (83430, 2264064), (84480, 2235924), (85536, 2208320), (85760, 2202552), (86832, 2175360), (88440, 2135808), (88992, 2122560), (90640, 2083968), (91773, 2058240), (92160, 2049597), (94336, 2002320), (95040, 1987488), (96480, 1957824), (98880, 1910304), (99495, 1898496), (100116, 1886720), (101376, 1863270), (101970, 1852416), (102912, 1835460), (103515, 1824768), (103680, 1821864), (105472, 1790910), (106128, 1779840), (106920, 1766656), (108540, 1740288), (108768, 1736640), (110416, 1710720), (111240, 1698048), (112640, 1676943), (114048, 1656240), (115776, 1631520), (117920, 1601856), (118656, 1591920), (119394, 1582080), (122364, 1543680), (124218, 1520640), (124416, 1518220), (125145, 1509376), (126720, 1490616), (128640, 1468368), (130248, 1450240), (131840, 1432728), (132660, 1423872), (133488, 1415040), (135960, 1389312), (137216, 1376595), (138020, 1368576), (138240, 1366398), (141504, 1334880), (142560, 1324992), (144720, 1305216), (145024, 1302480), (148320, 1273536), (151822, 1244160), (152064, 1242180), (152955, 1234944), (154368, 1223640), (155520, 1214576), (158208, 1193940), (159192, 1186560), (162810, 1160192), (163152, 1157760), (165624, 1140480), (165888, 1138665), (166860, 1132032), (168960, 1117962), (171072, 1104160), (171520, 1101276), (173664, 1087680), (176880, 1067904), (177984, 1061280), (179091, 1054720), (181280, 1041984), (183546, 1029120), (186327, 1013760), (188672, 1001160), (190080, 993744), (192960, 978912), (197760, 955152), (198990, 949248), (200232, 943360), (202752, 931635), (203940, 926208), (205824, 917730), (207030, 912384), (207360, 910932), (210944, 895455), (212256, 889920), (213840, 883328), (217080, 870144), (217536, 868320), (220832, 855360), (222480, 849024), (227733, 829440), (228096, 828120), (231552, 815760), (235840, 800928), (237312, 795960), (238788, 791040), (244728, 771840), (248436, 760320), (248832, 759110), (250290, 754688), (253440, 745308), (257280, 734184), (260496, 725120), (263680, 716364), (265320, 711936), (266976, 707520), (271920, 694656), (275319, 686080), (276040, 684288), (276480, 683199), (283008, 667440), (285120, 662496), (289440, 652608), (290048, 651240), (296640, 636768), (298485, 632832), (303644, 622080), (304128, 621090), (305910, 617472), (308736, 611820), (310545, 608256), (311040, 607288), (316416, 596970), (318384, 593280), (325620, 580096), (326304, 578880), (331248, 570240), (333720, 566016), (337920, 558981), (342144, 552080), (343040, 550638), (347328, 543840), (353760, 533952), (355968, 530640), (358182, 527360), (362560, 520992), (367092, 514560), (372654, 506880), (377344, 500580), (379555, 497664), (380160, 496872), (385920, 489456), (395520, 477576), (397980, 474624), (400464, 471680), (407880, 463104), (411648, 458865), (414060, 456192), (414720, 455466), (424512, 444960), (427680, 441664), (434160, 435072)]このpageの処理時間: 0.09943580627441406 seconds