17978840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1409}}^1$

素因数の和:1460

約数の個数: 64

約数和(自身を含む): 45684000

約数和(自身を除く): 27705160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1409, 1595, 2552, 2818, 3190, 5636, 6380, 7045, 11272, 12760, 14090, 15499, 28180, 30998, 40861, 56360, 61996, 77495, 81722, 123992, 154990, 163444, 204305, 309980, 326888, 408610, 449471, 619960, 817220, 898942, 1634440, 1797884, 2247355, 3595768, 4494710, 8989420, 17978840]

約数ペア:

[(1, 17978840), (2, 8989420), (4, 4494710), (5, 3595768), (8, 2247355), (10, 1797884), (11, 1634440), (20, 898942), (22, 817220), (29, 619960), (40, 449471), (44, 408610), (55, 326888), (58, 309980), (88, 204305), (110, 163444), (116, 154990), (145, 123992), (220, 81722), (232, 77495), (290, 61996), (319, 56360), (440, 40861), (580, 30998), (638, 28180), (1160, 15499), (1276, 14090), (1409, 12760), (1595, 11272), (2552, 7045), (2818, 6380), (3190, 5636)]