About the Number

136289144160

136289144159 ← → 136289144161

2進数表記:1111110111011011101110100110101100000

漢数字表記:千三百六十二億八千九百十四万四千百六十

素因数分解:

2 5 × 3 3 × 5 1 × 13 2 × 17 1 × 79 1 × 139 1

素因数の和:285
約数の個数: 1152
約数和(自身を含む): 557819136000
約数和(自身を除く): 421529991840

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 24, 26, 27, 30, 32, 34, 36, 39, 40, 45, 48, 51, 52, 54, 60, 65, 68, 72, 78, 79, 80, 85, 90, 96, 102, 104, 108, 117, 120, 130, 135, 136, 139, 144, 153, 156, 158, 160, 169, 170, 180, 195, 204, 208, 216, 221, 234, 237, 240, 255, 260, 270, 272, 278, 288, 306, 312, 316, 338, 340, 351, 360, 390, 395, 408, 416, 417, 432, 442, 459, 468, 474, 480, 507, 510, 520, 540, 544, 556, 585, 612, 624, 632, 663, 676, 680, 695, 702, 711, 720, 765, 780, 790, 816, 834, 845, 864, 884, 918, 936, 948, 1014, 1020, 1027, 1040, 1080, 1105, 1112, 1170, 1185, 1224, 1248, 1251, 1264, 1326, 1343, 1352, 1360, 1390, 1404, 1422, 1440, 1521, 1530, 1560, 1580, 1632, 1668, 1690, 1755, 1768, 1807, 1836, 1872, 1896, 1989, 2028, 2040, 2054, 2080, 2085, 2133, 2160, 2210, 2224, 2295, 2340, 2363, 2370, 2448, 2502, 2528, 2535, 2652, 2686, 2704, 2720, 2780, 2808, 2844, 2873, 3042, 3060, 3081, 3120, 3160, 3315, 3336, 3380, 3510, 3536, 3555, 3614, 3672, 3744, 3753, 3792, 3978, 4029, 4056, 4080, 4108, 4170, 4266, 4320, 4420, 4448, 4563, 4590, 4680, 4726, 4740, 4896, 5004, 5070, 5135, 5304, 5372, 5408, 5421, 5560, 5616, 5688, 5746, 5967, 6084, 6120, 6162, 6240, 6255, 6320, 6630, 6672, 6715, 6760, 7020, 7072, 7089, 7110, 7228, 7344, 7506, 7584, 7605, 7956, 8058, 8112, 8160, 8216, 8340, 8532, 8619, 8840, 9035, 9126, 9180, 9243, 9360, 9452, 9480, 9945, 10008, 10140, 10270, 10608, 10665, 10744, 10842, 10981, 11120, 11232, 11376, 11492, 11815, 11934, 12087, 12168, 12240, 12324, 12510, 12640, 13260, 13344, 13351, 13430, 13520, 14040, 14178, 14220, 14365, 14456, 14688, 15012, 15210, 15405, 15912, 16116, 16224, 16263, 16432, 16680, 17064, 17238, 17459, 17680, 18070, 18252, 18360, 18486, 18720, 18765, 18904, 18960, 19890, 20016, 20145, 20280, 20540, 21216, 21267, 21330, 21488, 21684, 21962, 22240, 22752, 22815, 22984, 23491, 23630, 23868, 24174, 24336, 24480, 24648, 25020, 25857, 26520, 26702, 26860, 27040, 27105, 27729, 28080, 28356, 28440, 28730, 28912, 29835, 30024, 30420, 30719, 30810, 31824, 32232, 32526, 32864, 32943, 33360, 34128, 34476, 34918, 35360, 35445, 36140, 36261, 36504, 36720, 36972, 37530, 37808, 37920, 39780, 40032, 40053, 40290, 40560, 41080, 42534, 42660, 42976, 43095, 43368, 43924, 45630, 45968, 46215, 46982, 47260, 47736, 48348, 48672, 48789, 49296, 50040, 51714, 52377, 53040, 53404, 53720, 54210, 54905, 55458, 56160, 56712, 56880, 57460, 57824, 59670, 60048, 60435, 60840, 61438, 61620, 63648, 63801, 64464, 65052, 65886, 66720, 66755, 68256, 68952, 69836, 70473, 70890, 72280, 72522, 73008, 73440, 73944, 75060, 75616, 77571, 79560, 80106, 80580, 81120, 81315, 82160, 85068, 85320, 86190, 86736, 87295, 87848, 91260, 91936, 92157, 92430, 93964, 94520, 95472, 96696, 97578, 98592, 98829, 100080, 103428, 104754, 106080, 106335, 106808, 107440, 108420, 109810, 110916, 113424, 113760, 114920, 117455, 119340, 120096, 120159, 120870, 121680, 122876, 123240, 127602, 128928, 129285, 130104, 131772, 133510, 137904, 138645, 139672, 140946, 141780, 142753, 144560, 145044, 146016, 147888, 150120, 153595, 155142, 157131, 159120, 160212, 161160, 162630, 164320, 164715, 170136, 170640, 172380, 173472, 174590, 175696, 181305, 182520, 184314, 184860, 186677, 187928, 189040, 190944, 193392, 195156, 197658, 200160, 200265, 206856, 209508, 211419, 212670, 213616, 214880, 216840, 219620, 221832, 226848, 226967, 229840, 234910, 238680, 240318, 241740, 243360, 243945, 245752, 246480, 255204, 258570, 260208, 261885, 263544, 267020, 275808, 276471, 277290, 279344, 281892, 283560, 285506, 289120, 290088, 295776, 296487, 300240, 307190, 310284, 314262, 318240, 319005, 320424, 322320, 325260, 329430, 340272, 341280, 344760, 349180, 351392, 352365, 360477, 362610, 365040, 368628, 369720, 373354, 375856, 378080, 386784, 387855, 390312, 395316, 399347, 400530, 413712, 419016, 422838, 425340, 427232, 428259, 433680, 439240, 443664, 453934, 459680, 460785, 469820, 471393, 477360, 480636, 483480, 487890, 491504, 492960, 494145, 510408, 517140, 520416, 523770, 527088, 534040, 552942, 554580, 558688, 560031, 563784, 567120, 571012, 580176, 592974, 600480, 600795, 614380, 620568, 628524, 634257, 638010, 640848, 644640, 650520, 658860, 680544, 680901, 689520, 698360, 704730, 713765, 720954, 725220, 730080, 737256, 739440, 746708, 751712, 775710, 780624, 785655, 790632, 798694, 801060, 827424, 829413, 838032, 845676, 850680, 856518, 867360, 878480, 887328, 907868, 921570, 933385, 939640, 942786, 954720, 961272, 966960, 975780, 983008, 988290, 1020816, 1034280, 1047540, 1054176, 1057095, 1068080, 1105884, 1109160, 1120062, 1127568, 1134240, 1134835, 1142024, 1160352, 1185948, 1198041, 1201590, 1228760, 1241136, 1257048, 1268514, 1276020, 1281696, 1284777, 1301040, 1317720, 1361802, 1379040, 1382355, 1396720, 1409460, 1427530, 1441908, 1450440, 1474512, 1478880, 1482435, 1493416, 1551420, 1561248, 1571310, 1581264, 1597388, 1602120, 1658826, 1676064, 1680093, 1691352, 1701360, 1713036, 1756960, 1802385, 1815736, 1843140, 1855789, 1866770, 1879280, 1885572, 1922544, 1933920, 1951560, 1976580, 1996735, 2041632, 2042703, 2068560, 2095080, 2114190, 2136160, 2141295, 2211768, 2218320, 2240124, 2255136, 2269670, 2284048, 2356965, 2371896, 2396082, 2403180, 2426801, 2457520, 2482272, 2514096, 2537028, 2552040, 2569554, 2602080, 2635440, 2723604, 2764710, 2793440, 2800155, 2818920, 2855060, 2883816, 2900880, 2949024, 2964870, 2986832, 3102840, 3142620, 3162528, 3171285, 3194776, 3204240, 3317652, 3360186, 3382704, 3402720, 3404505, 3426072, 3594123, 3604770, 3631472, 3686280, 3711578, 3733540, 3758560, 3771144, 3845088, 3854331, 3903120, 3953160, 3993470, 4085406, 4137120, 4147065, 4190160, 4228380, 4282590, 4423536, 4436640, 4480248, 4539340, 4568096, 4713930, 4743792, 4792164, 4806360, 4853602, 4915040, 5028192, 5040279, 5074056, 5104080, 5139108, 5270880, 5447208, 5529420, 5567367, 5600310, 5637840, 5710120, 5767632, 5801760, 5929740, 5973664, 5990205, 6128109, 6205680, 6285240, 6342570, 6389552, 6408480, 6423885, 6635304, 6720372, 6765408, 6809010, 6852144, 7188246, 7209540, 7262944, 7280403, 7372560, 7423156, 7467080, 7542288, 7708662, 7806240, 7906320, 7986940, 8170812, 8294130, 8380320, 8400465, 8456760, 8565180, 8847072, 8960496, 9078680, 9278945, 9427860, 9487584, 9584328, 9612720, 9707204, 10080558, 10148112, 10208160, 10213515, 10278216, 10782369, 10894416, 11058840, 11134734, 11200620, 11275680, 11420240, 11535264, 11859480, 11980410, 12134005, 12256218, 12411360, 12570480, 12685140, 12779104, 12847770, 13270608, 13440744, 13618020, 13704288, 14376492, 14419080, 14560806, 14745120, 14846312, 14934160, 15084576, 15417324, 15812640, 15973880, 16341624, 16588260, 16702101, 16800930, 16913520, 17130360, 17920992, 17970615, 18157360, 18557890, 18855720, 19168656, 19225440, 19271655, 19414408, 20161116, 20296224, 20427030, 20556432, 21564738, 21788832, 21841209, 22117680, 22269468, 22401240, 22840480, 23718960, 23960820, 24268010, 24512436, 25140960, 25201395, 25370280, 25695540, 26541216, 26881488, 27236040, 27836835, 28752984, 28838160, 29121612, 29692624, 29868320, 30640545, 30834648, 31548413, 31947760, 32683248, 33176520, 33404202, 33601860, 33827040, 34260720, 35941230, 36314720, 36402015, 37115780, 37711440, 38337312, 38543310, 38828816, 40322232, 40854060, 41112864, 43129476, 43682418, 44235360, 44538936, 44802480, 47437920, 47921640, 48536020, 49024872, 50106303, 50402790, 50740560, 51391080, 53762976, 53911845, 54472080, 55673670, 57505968, 57676320, 58243224, 59385248, 61281090, 61669296, 63096826, 63895520, 65366496, 65523627, 66353040, 66808404, 67203720, 68521440, 71882460, 72804030, 74231560, 75422880, 77086620, 77657632, 80644464, 81708120, 83510505, 86258952, 87364836, 89077872, 89604960, 94645239, 95843280, 97072040, 98049744, 100212606, 100805580, 101481120, 102782160, 107823690, 108944160, 109206045, 111347340, 115011936, 116486448, 122562180, 123338592, 126193652, 131047254, 132706080, 133616808, 134407440, 143764920, 145608060, 148463120, 154173240, 157742065, 161288928, 163416240, 167021010, 172517904, 174729672, 178155744, 189290478, 191686560, 194144080, 196099488, 200425212, 201611160, 205564320, 215647380, 218412090, 222694680, 232972896, 245124360, 250531515, 252387304, 262094508, 267233616, 268814880, 283935717, 287529840, 291216120, 296926240, 308346480, 315484130, 326832480, 327618135, 334042020, 345035808, 349459344, 378580956, 388288160, 400850424, 403222320, 431294760, 436824180, 445389360, 473226195, 490248720, 501063030, 504774608, 524189016, 534467232, 567871434, 575059680, 582432240, 616692960, 630968260, 655236270, 668084040, 698918688, 757161912, 801700848, 806444640, 851807151, 862589520, 873648360, 890778720, 946452390, 980497440, 1002126060, 1009549216, 1048378032, 1135742868, 1164864480, 1261936520, 1310472540, 1336168080, 1419678585, 1514323824, 1603401696, 1703614302, 1725179040, 1747296720, 1892904780, 2004252120, 2096756064, 2271485736, 2523873040, 2620945080, 2672336160, 2839357170, 3028647648, 3407228604, 3494593440, 3785809560, 4008504240, 4259035755, 4542971472, 5047746080, 5241890160, 5678714340, 6814457208, 7571619120, 8017008480, 8518071510, 9085942944, 10483780320, 11357428680, 13628914416, 15143238240, 17036143020, 22714857360, 27257828832, 34072286040, 45429714720, 68144572080, 136289144160]

約数ペア:
[(1, 136289144160), (2, 68144572080), (3, 45429714720), (4, 34072286040), (5, 27257828832), (6, 22714857360), (8, 17036143020), (9, 15143238240), (10, 13628914416), (12, 11357428680), (13, 10483780320), (15, 9085942944), (16, 8518071510), (17, 8017008480), (18, 7571619120), (20, 6814457208), (24, 5678714340), (26, 5241890160), (27, 5047746080), (30, 4542971472), (32, 4259035755), (34, 4008504240), (36, 3785809560), (39, 3494593440), (40, 3407228604), (45, 3028647648), (48, 2839357170), (51, 2672336160), (52, 2620945080), (54, 2523873040), (60, 2271485736), (65, 2096756064), (68, 2004252120), (72, 1892904780), (78, 1747296720), (79, 1725179040), (80, 1703614302), (85, 1603401696), (90, 1514323824), (96, 1419678585), (102, 1336168080), (104, 1310472540), (108, 1261936520), (117, 1164864480), (120, 1135742868), (130, 1048378032), (135, 1009549216), (136, 1002126060), (139, 980497440), (144, 946452390), (153, 890778720), (156, 873648360), (158, 862589520), (160, 851807151), (169, 806444640), (170, 801700848), (180, 757161912), (195, 698918688), (204, 668084040), (208, 655236270), (216, 630968260), (221, 616692960), (234, 582432240), (237, 575059680), (240, 567871434), (255, 534467232), (260, 524189016), (270, 504774608), (272, 501063030), (278, 490248720), (288, 473226195), (306, 445389360), (312, 436824180), (316, 431294760), (338, 403222320), (340, 400850424), (351, 388288160), (360, 378580956), (390, 349459344), (395, 345035808), (408, 334042020), (416, 327618135), (417, 326832480), (432, 315484130), (442, 308346480), (459, 296926240), (468, 291216120), (474, 287529840), (480, 283935717), (507, 268814880), (510, 267233616), (520, 262094508), (540, 252387304), (544, 250531515), (556, 245124360), (585, 232972896), (612, 222694680), (624, 218412090), (632, 215647380), (663, 205564320), (676, 201611160), (680, 200425212), (695, 196099488), (702, 194144080), (711, 191686560), (720, 189290478), (765, 178155744), (780, 174729672), (790, 172517904), (816, 167021010), (834, 163416240), (845, 161288928), (864, 157742065), (884, 154173240), (918, 148463120), (936, 145608060), (948, 143764920), (1014, 134407440), (1020, 133616808), (1027, 132706080), (1040, 131047254), (1080, 126193652), (1105, 123338592), (1112, 122562180), (1170, 116486448), (1185, 115011936), (1224, 111347340), (1248, 109206045), (1251, 108944160), (1264, 107823690), (1326, 102782160), (1343, 101481120), (1352, 100805580), (1360, 100212606), (1390, 98049744), (1404, 97072040), (1422, 95843280), (1440, 94645239), (1521, 89604960), (1530, 89077872), (1560, 87364836), (1580, 86258952), (1632, 83510505), (1668, 81708120), (1690, 80644464), (1755, 77657632), (1768, 77086620), (1807, 75422880), (1836, 74231560), (1872, 72804030), (1896, 71882460), (1989, 68521440), (2028, 67203720), (2040, 66808404), (2054, 66353040), (2080, 65523627), (2085, 65366496), (2133, 63895520), (2160, 63096826), (2210, 61669296), (2224, 61281090), (2295, 59385248), (2340, 58243224), (2363, 57676320), (2370, 57505968), (2448, 55673670), (2502, 54472080), (2528, 53911845), (2535, 53762976), (2652, 51391080), (2686, 50740560), (2704, 50402790), (2720, 50106303), (2780, 49024872), (2808, 48536020), (2844, 47921640), (2873, 47437920), (3042, 44802480), (3060, 44538936), (3081, 44235360), (3120, 43682418), (3160, 43129476), (3315, 41112864), (3336, 40854060), (3380, 40322232), (3510, 38828816), (3536, 38543310), (3555, 38337312), (3614, 37711440), (3672, 37115780), (3744, 36402015), (3753, 36314720), (3792, 35941230), (3978, 34260720), (4029, 33827040), (4056, 33601860), (4080, 33404202), (4108, 33176520), (4170, 32683248), (4266, 31947760), (4320, 31548413), (4420, 30834648), (4448, 30640545), (4563, 29868320), (4590, 29692624), (4680, 29121612), (4726, 28838160), (4740, 28752984), (4896, 27836835), (5004, 27236040), (5070, 26881488), (5135, 26541216), (5304, 25695540), (5372, 25370280), (5408, 25201395), (5421, 25140960), (5560, 24512436), (5616, 24268010), (5688, 23960820), (5746, 23718960), (5967, 22840480), (6084, 22401240), (6120, 22269468), (6162, 22117680), (6240, 21841209), (6255, 21788832), (6320, 21564738), (6630, 20556432), (6672, 20427030), (6715, 20296224), (6760, 20161116), (7020, 19414408), (7072, 19271655), (7089, 19225440), (7110, 19168656), (7228, 18855720), (7344, 18557890), (7506, 18157360), (7584, 17970615), (7605, 17920992), (7956, 17130360), (8058, 16913520), (8112, 16800930), (8160, 16702101), (8216, 16588260), (8340, 16341624), (8532, 15973880), (8619, 15812640), (8840, 15417324), (9035, 15084576), (9126, 14934160), (9180, 14846312), (9243, 14745120), (9360, 14560806), (9452, 14419080), (9480, 14376492), (9945, 13704288), (10008, 13618020), (10140, 13440744), (10270, 13270608), (10608, 12847770), (10665, 12779104), (10744, 12685140), (10842, 12570480), (10981, 12411360), (11120, 12256218), (11232, 12134005), (11376, 11980410), (11492, 11859480), (11815, 11535264), (11934, 11420240), (12087, 11275680), (12168, 11200620), (12240, 11134734), (12324, 11058840), (12510, 10894416), (12640, 10782369), (13260, 10278216), (13344, 10213515), (13351, 10208160), (13430, 10148112), (13520, 10080558), (14040, 9707204), (14178, 9612720), (14220, 9584328), (14365, 9487584), (14456, 9427860), (14688, 9278945), (15012, 9078680), (15210, 8960496), (15405, 8847072), (15912, 8565180), (16116, 8456760), (16224, 8400465), (16263, 8380320), (16432, 8294130), (16680, 8170812), (17064, 7986940), (17238, 7906320), (17459, 7806240), (17680, 7708662), (18070, 7542288), (18252, 7467080), (18360, 7423156), (18486, 7372560), (18720, 7280403), (18765, 7262944), (18904, 7209540), (18960, 7188246), (19890, 6852144), (20016, 6809010), (20145, 6765408), (20280, 6720372), (20540, 6635304), (21216, 6423885), (21267, 6408480), (21330, 6389552), (21488, 6342570), (21684, 6285240), (21962, 6205680), (22240, 6128109), (22752, 5990205), (22815, 5973664), (22984, 5929740), (23491, 5801760), (23630, 5767632), (23868, 5710120), (24174, 5637840), (24336, 5600310), (24480, 5567367), (24648, 5529420), (25020, 5447208), (25857, 5270880), (26520, 5139108), (26702, 5104080), (26860, 5074056), (27040, 5040279), (27105, 5028192), (27729, 4915040), (28080, 4853602), (28356, 4806360), (28440, 4792164), (28730, 4743792), (28912, 4713930), (29835, 4568096), (30024, 4539340), (30420, 4480248), (30719, 4436640), (30810, 4423536), (31824, 4282590), (32232, 4228380), (32526, 4190160), (32864, 4147065), (32943, 4137120), (33360, 4085406), (34128, 3993470), (34476, 3953160), (34918, 3903120), (35360, 3854331), (35445, 3845088), (36140, 3771144), (36261, 3758560), (36504, 3733540), (36720, 3711578), (36972, 3686280), (37530, 3631472), (37808, 3604770), (37920, 3594123), (39780, 3426072), (40032, 3404505), (40053, 3402720), (40290, 3382704), (40560, 3360186), (41080, 3317652), (42534, 3204240), (42660, 3194776), (42976, 3171285), (43095, 3162528), (43368, 3142620), (43924, 3102840), (45630, 2986832), (45968, 2964870), (46215, 2949024), (46982, 2900880), (47260, 2883816), (47736, 2855060), (48348, 2818920), (48672, 2800155), (48789, 2793440), (49296, 2764710), (50040, 2723604), (51714, 2635440), (52377, 2602080), (53040, 2569554), (53404, 2552040), (53720, 2537028), (54210, 2514096), (54905, 2482272), (55458, 2457520), (56160, 2426801), (56712, 2403180), (56880, 2396082), (57460, 2371896), (57824, 2356965), (59670, 2284048), (60048, 2269670), (60435, 2255136), (60840, 2240124), (61438, 2218320), (61620, 2211768), (63648, 2141295), (63801, 2136160), (64464, 2114190), (65052, 2095080), (65886, 2068560), (66720, 2042703), (66755, 2041632), (68256, 1996735), (68952, 1976580), (69836, 1951560), (70473, 1933920), (70890, 1922544), (72280, 1885572), (72522, 1879280), (73008, 1866770), (73440, 1855789), (73944, 1843140), (75060, 1815736), (75616, 1802385), (77571, 1756960), (79560, 1713036), (80106, 1701360), (80580, 1691352), (81120, 1680093), (81315, 1676064), (82160, 1658826), (85068, 1602120), (85320, 1597388), (86190, 1581264), (86736, 1571310), (87295, 1561248), (87848, 1551420), (91260, 1493416), (91936, 1482435), (92157, 1478880), (92430, 1474512), (93964, 1450440), (94520, 1441908), (95472, 1427530), (96696, 1409460), (97578, 1396720), (98592, 1382355), (98829, 1379040), (100080, 1361802), (103428, 1317720), (104754, 1301040), (106080, 1284777), (106335, 1281696), (106808, 1276020), (107440, 1268514), (108420, 1257048), (109810, 1241136), (110916, 1228760), (113424, 1201590), (113760, 1198041), (114920, 1185948), (117455, 1160352), (119340, 1142024), (120096, 1134835), (120159, 1134240), (120870, 1127568), (121680, 1120062), (122876, 1109160), (123240, 1105884), (127602, 1068080), (128928, 1057095), (129285, 1054176), (130104, 1047540), (131772, 1034280), (133510, 1020816), (137904, 988290), (138645, 983008), (139672, 975780), (140946, 966960), (141780, 961272), (142753, 954720), (144560, 942786), (145044, 939640), (146016, 933385), (147888, 921570), (150120, 907868), (153595, 887328), (155142, 878480), (157131, 867360), (159120, 856518), (160212, 850680), (161160, 845676), (162630, 838032), (164320, 829413), (164715, 827424), (170136, 801060), (170640, 798694), (172380, 790632), (173472, 785655), (174590, 780624), (175696, 775710), (181305, 751712), (182520, 746708), (184314, 739440), (184860, 737256), (186677, 730080), (187928, 725220), (189040, 720954), (190944, 713765), (193392, 704730), (195156, 698360), (197658, 689520), (200160, 680901), (200265, 680544), (206856, 658860), (209508, 650520), (211419, 644640), (212670, 640848), (213616, 638010), (214880, 634257), (216840, 628524), (219620, 620568), (221832, 614380), (226848, 600795), (226967, 600480), (229840, 592974), (234910, 580176), (238680, 571012), (240318, 567120), (241740, 563784), (243360, 560031), (243945, 558688), (245752, 554580), (246480, 552942), (255204, 534040), (258570, 527088), (260208, 523770), (261885, 520416), (263544, 517140), (267020, 510408), (275808, 494145), (276471, 492960), (277290, 491504), (279344, 487890), (281892, 483480), (283560, 480636), (285506, 477360), (289120, 471393), (290088, 469820), (295776, 460785), (296487, 459680), (300240, 453934), (307190, 443664), (310284, 439240), (314262, 433680), (318240, 428259), (319005, 427232), (320424, 425340), (322320, 422838), (325260, 419016), (329430, 413712), (340272, 400530), (341280, 399347), (344760, 395316), (349180, 390312), (351392, 387855), (352365, 386784), (360477, 378080), (362610, 375856), (365040, 373354), (368628, 369720)]

このpageの処理時間: 0.8671259880065918 seconds