256961640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1297}}^1$

素因数の和:1451

約数の個数: 128

約数和(自身を含む): 837365760

約数和(自身を除く): 580404120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 127, 130, 156, 195, 254, 260, 312, 381, 390, 508, 520, 635, 762, 780, 1016, 1270, 1297, 1524, 1560, 1651, 1905, 2540, 2594, 3048, 3302, 3810, 3891, 4953, 5080, 5188, 6485, 6604, 7620, 7782, 8255, 9906, 10376, 12970, 13208, 15240, 15564, 16510, 16861, 19455, 19812, 24765, 25940, 31128, 33020, 33722, 38910, 39624, 49530, 50583, 51880, 66040, 67444, 77820, 84305, 99060, 101166, 134888, 155640, 164719, 168610, 198120, 202332, 252915, 329438, 337220, 404664, 494157, 505830, 658876, 674440, 823595, 988314, 1011660, 1317752, 1647190, 1976628, 2023320, 2141347, 2470785, 3294380, 3953256, 4282694, 4941570, 6424041, 6588760, 8565388, 9883140, 10706735, 12848082, 17130776, 19766280, 21413470, 25696164, 32120205, 42826940, 51392328, 64240410, 85653880, 128480820, 256961640]

約数ペア:

[(1, 256961640), (2, 128480820), (3, 85653880), (4, 64240410), (5, 51392328), (6, 42826940), (8, 32120205), (10, 25696164), (12, 21413470), (13, 19766280), (15, 17130776), (20, 12848082), (24, 10706735), (26, 9883140), (30, 8565388), (39, 6588760), (40, 6424041), (52, 4941570), (60, 4282694), (65, 3953256), (78, 3294380), (104, 2470785), (120, 2141347), (127, 2023320), (130, 1976628), (156, 1647190), (195, 1317752), (254, 1011660), (260, 988314), (312, 823595), (381, 674440), (390, 658876), (508, 505830), (520, 494157), (635, 404664), (762, 337220), (780, 329438), (1016, 252915), (1270, 202332), (1297, 198120), (1524, 168610), (1560, 164719), (1651, 155640), (1905, 134888), (2540, 101166), (2594, 99060), (3048, 84305), (3302, 77820), (3810, 67444), (3891, 66040), (4953, 51880), (5080, 50583), (5188, 49530), (6485, 39624), (6604, 38910), (7620, 33722), (7782, 33020), (8255, 31128), (9906, 25940), (10376, 24765), (12970, 19812), (13208, 19455), (15240, 16861), (15564, 16510)]