256735440

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:299

約数の個数: 320

約数和(自身を含む): 979937280

約数和(自身を除く): 723201840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 36, 39, 40, 41, 45, 48, 52, 54, 60, 65, 72, 78, 80, 82, 90, 104, 108, 117, 120, 123, 130, 135, 144, 156, 164, 180, 195, 205, 208, 216, 223, 234, 240, 246, 260, 270, 312, 328, 351, 360, 369, 390, 410, 432, 446, 468, 492, 520, 533, 540, 585, 615, 624, 656, 669, 702, 720, 738, 780, 820, 892, 936, 984, 1040, 1066, 1080, 1107, 1115, 1170, 1230, 1338, 1404, 1476, 1560, 1599, 1640, 1755, 1784, 1845, 1872, 1968, 2007, 2132, 2160, 2214, 2230, 2340, 2460, 2665, 2676, 2808, 2899, 2952, 3120, 3198, 3280, 3345, 3510, 3568, 3690, 4014, 4264, 4428, 4460, 4680, 4797, 4920, 5330, 5352, 5535, 5616, 5798, 5904, 6021, 6396, 6690, 7020, 7380, 7995, 8028, 8528, 8697, 8856, 8920, 9143, 9360, 9594, 9840, 10035, 10660, 10704, 11070, 11596, 12042, 12792, 13380, 14040, 14391, 14495, 14760, 15990, 16056, 17394, 17712, 17840, 18286, 19188, 20070, 21320, 22140, 23192, 23985, 24084, 25584, 26091, 26760, 27429, 28080, 28782, 28990, 29520, 30105, 31980, 32112, 34788, 36572, 38376, 40140, 42640, 43485, 44280, 45715, 46384, 47970, 48168, 52182, 53520, 54858, 57564, 57980, 60210, 63960, 69576, 71955, 73144, 76752, 78273, 80280, 82287, 86970, 88560, 91430, 95940, 96336, 104364, 109716, 115128, 115960, 118859, 120420, 127920, 130455, 137145, 139152, 143910, 146288, 156546, 160560, 164574, 173940, 182860, 191880, 208728, 219432, 230256, 231920, 237718, 240840, 246861, 260910, 274290, 287820, 313092, 329148, 347880, 356577, 365720, 383760, 391365, 411435, 417456, 438864, 475436, 481680, 493722, 521820, 548580, 575640, 594295, 626184, 658296, 695760, 713154, 731440, 782730, 822870, 950872, 987444, 1043640, 1069731, 1097160, 1151280, 1188590, 1234305, 1252368, 1316592, 1426308, 1565460, 1645740, 1782885, 1901744, 1974888, 2087280, 2139462, 2194320, 2377180, 2468610, 2852616, 3130920, 3209193, 3291480, 3565770, 3949776, 4278924, 4754360, 4937220, 5348655, 5705232, 6261840, 6418386, 6582960, 7131540, 8557848, 9508720, 9874440, 10697310, 12836772, 14263080, 16045965, 17115696, 19748880, 21394620, 25673544, 28526160, 32091930, 42789240, 51347088, 64183860, 85578480, 128367720, 256735440]

約数ペア:

[(1, 256735440), (2, 128367720), (3, 85578480), (4, 64183860), (5, 51347088), (6, 42789240), (8, 32091930), (9, 28526160), (10, 25673544), (12, 21394620), (13, 19748880), (15, 17115696), (16, 16045965), (18, 14263080), (20, 12836772), (24, 10697310), (26, 9874440), (27, 9508720), (30, 8557848), (36, 7131540), (39, 6582960), (40, 6418386), (41, 6261840), (45, 5705232), (48, 5348655), (52, 4937220), (54, 4754360), (60, 4278924), (65, 3949776), (72, 3565770), (78, 3291480), (80, 3209193), (82, 3130920), (90, 2852616), (104, 2468610), (108, 2377180), (117, 2194320), (120, 2139462), (123, 2087280), (130, 1974888), (135, 1901744), (144, 1782885), (156, 1645740), (164, 1565460), (180, 1426308), (195, 1316592), (205, 1252368), (208, 1234305), (216, 1188590), (223, 1151280), (234, 1097160), (240, 1069731), (246, 1043640), (260, 987444), (270, 950872), (312, 822870), (328, 782730), (351, 731440), (360, 713154), (369, 695760), (390, 658296), (410, 626184), (432, 594295), (446, 575640), (468, 548580), (492, 521820), (520, 493722), (533, 481680), (540, 475436), (585, 438864), (615, 417456), (624, 411435), (656, 391365), (669, 383760), (702, 365720), (720, 356577), (738, 347880), (780, 329148), (820, 313092), (892, 287820), (936, 274290), (984, 260910), (1040, 246861), (1066, 240840), (1080, 237718), (1107, 231920), (1115, 230256), (1170, 219432), (1230, 208728), (1338, 191880), (1404, 182860), (1476, 173940), (1560, 164574), (1599, 160560), (1640, 156546), (1755, 146288), (1784, 143910), (1845, 139152), (1872, 137145), (1968, 130455), (2007, 127920), (2132, 120420), (2160, 118859), (2214, 115960), (2230, 115128), (2340, 109716), (2460, 104364), (2665, 96336), (2676, 95940), (2808, 91430), (2899, 88560), (2952, 86970), (3120, 82287), (3198, 80280), (3280, 78273), (3345, 76752), (3510, 73144), (3568, 71955), (3690, 69576), (4014, 63960), (4264, 60210), (4428, 57980), (4460, 57564), (4680, 54858), (4797, 53520), (4920, 52182), (5330, 48168), (5352, 47970), (5535, 46384), (5616, 45715), (5798, 44280), (5904, 43485), (6021, 42640), (6396, 40140), (6690, 38376), (7020, 36572), (7380, 34788), (7995, 32112), (8028, 31980), (8528, 30105), (8697, 29520), (8856, 28990), (8920, 28782), (9143, 28080), (9360, 27429), (9594, 26760), (9840, 26091), (10035, 25584), (10660, 24084), (10704, 23985), (11070, 23192), (11596, 22140), (12042, 21320), (12792, 20070), (13380, 19188), (14040, 18286), (14391, 17840), (14495, 17712), (14760, 17394), (15990, 16056)]