81495440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3407}}^1$

素因数の和:3456

約数の個数: 80

約数和(自身を含む): 212986368

約数和(自身を除く): 131490928

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1196, 1495, 1840, 2392, 2990, 3407, 4784, 5980, 6814, 11960, 13628, 17035, 23920, 27256, 34070, 44291, 54512, 68140, 78361, 88582, 136280, 156722, 177164, 221455, 272560, 313444, 354328, 391805, 442910, 626888, 708656, 783610, 885820, 1018693, 1253776, 1567220, 1771640, 2037386, 3134440, 3543280, 4074772, 5093465, 6268880, 8149544, 10186930, 16299088, 20373860, 40747720, 81495440]

約数ペア:

[(1, 81495440), (2, 40747720), (4, 20373860), (5, 16299088), (8, 10186930), (10, 8149544), (13, 6268880), (16, 5093465), (20, 4074772), (23, 3543280), (26, 3134440), (40, 2037386), (46, 1771640), (52, 1567220), (65, 1253776), (80, 1018693), (92, 885820), (104, 783610), (115, 708656), (130, 626888), (184, 442910), (208, 391805), (230, 354328), (260, 313444), (299, 272560), (368, 221455), (460, 177164), (520, 156722), (598, 136280), (920, 88582), (1040, 78361), (1196, 68140), (1495, 54512), (1840, 44291), (2392, 34070), (2990, 27256), (3407, 23920), (4784, 17035), (5980, 13628), (6814, 11960)]