256415640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:298

約数の個数: 256

約数和(自身を含む): 897523200

約数和(自身を除く): 641107560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 41, 52, 57, 60, 65, 76, 78, 82, 95, 104, 114, 120, 123, 130, 152, 156, 164, 190, 195, 205, 211, 228, 246, 247, 260, 285, 312, 328, 380, 390, 410, 422, 456, 492, 494, 520, 533, 570, 615, 633, 741, 760, 779, 780, 820, 844, 984, 988, 1055, 1066, 1140, 1230, 1235, 1266, 1482, 1558, 1560, 1599, 1640, 1688, 1976, 2110, 2132, 2280, 2337, 2460, 2470, 2532, 2665, 2743, 2964, 3116, 3165, 3198, 3705, 3895, 4009, 4220, 4264, 4674, 4920, 4940, 5064, 5330, 5486, 5928, 6232, 6330, 6396, 7410, 7790, 7995, 8018, 8229, 8440, 8651, 9348, 9880, 10127, 10660, 10972, 11685, 12027, 12660, 12792, 13715, 14820, 15580, 15990, 16036, 16458, 17302, 18696, 20045, 20254, 21320, 21944, 23370, 24054, 25320, 25953, 27430, 29640, 30381, 31160, 31980, 32072, 32916, 34604, 40090, 40508, 41145, 43255, 46740, 48108, 50635, 51906, 52117, 54860, 60135, 60762, 63960, 65832, 69208, 80180, 81016, 82290, 86510, 93480, 96216, 101270, 103812, 104234, 109720, 112463, 120270, 121524, 129765, 151905, 156351, 160360, 164369, 164580, 173020, 202540, 207624, 208468, 224926, 240540, 243048, 259530, 260585, 303810, 312702, 328738, 329160, 337389, 346040, 405080, 416936, 449852, 481080, 493107, 519060, 521170, 562315, 607620, 625404, 657476, 674778, 781755, 821845, 899704, 986214, 1038120, 1042340, 1124630, 1215240, 1250808, 1314952, 1349556, 1563510, 1643690, 1686945, 1972428, 2084680, 2136797, 2249260, 2465535, 2699112, 3127020, 3287380, 3373890, 3944856, 4273594, 4498520, 4931070, 6254040, 6410391, 6574760, 6747780, 8547188, 9862140, 10683985, 12820782, 13495560, 17094376, 19724280, 21367970, 25641564, 32051955, 42735940, 51283128, 64103910, 85471880, 128207820, 256415640]

約数ペア:

[(1, 256415640), (2, 128207820), (3, 85471880), (4, 64103910), (5, 51283128), (6, 42735940), (8, 32051955), (10, 25641564), (12, 21367970), (13, 19724280), (15, 17094376), (19, 13495560), (20, 12820782), (24, 10683985), (26, 9862140), (30, 8547188), (38, 6747780), (39, 6574760), (40, 6410391), (41, 6254040), (52, 4931070), (57, 4498520), (60, 4273594), (65, 3944856), (76, 3373890), (78, 3287380), (82, 3127020), (95, 2699112), (104, 2465535), (114, 2249260), (120, 2136797), (123, 2084680), (130, 1972428), (152, 1686945), (156, 1643690), (164, 1563510), (190, 1349556), (195, 1314952), (205, 1250808), (211, 1215240), (228, 1124630), (246, 1042340), (247, 1038120), (260, 986214), (285, 899704), (312, 821845), (328, 781755), (380, 674778), (390, 657476), (410, 625404), (422, 607620), (456, 562315), (492, 521170), (494, 519060), (520, 493107), (533, 481080), (570, 449852), (615, 416936), (633, 405080), (741, 346040), (760, 337389), (779, 329160), (780, 328738), (820, 312702), (844, 303810), (984, 260585), (988, 259530), (1055, 243048), (1066, 240540), (1140, 224926), (1230, 208468), (1235, 207624), (1266, 202540), (1482, 173020), (1558, 164580), (1560, 164369), (1599, 160360), (1640, 156351), (1688, 151905), (1976, 129765), (2110, 121524), (2132, 120270), (2280, 112463), (2337, 109720), (2460, 104234), (2470, 103812), (2532, 101270), (2665, 96216), (2743, 93480), (2964, 86510), (3116, 82290), (3165, 81016), (3198, 80180), (3705, 69208), (3895, 65832), (4009, 63960), (4220, 60762), (4264, 60135), (4674, 54860), (4920, 52117), (4940, 51906), (5064, 50635), (5330, 48108), (5486, 46740), (5928, 43255), (6232, 41145), (6330, 40508), (6396, 40090), (7410, 34604), (7790, 32916), (7995, 32072), (8018, 31980), (8229, 31160), (8440, 30381), (8651, 29640), (9348, 27430), (9880, 25953), (10127, 25320), (10660, 24054), (10972, 23370), (11685, 21944), (12027, 21320), (12660, 20254), (12792, 20045), (13715, 18696), (14820, 17302), (15580, 16458), (15990, 16036)]