81931940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{2437}}^1$

素因数の和:2528

約数の個数: 36

約数和(自身を含む): 176428308

約数和(自身を除く): 94496368

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1681, 2437, 3362, 4874, 6724, 8405, 9748, 12185, 16810, 24370, 33620, 48740, 99917, 199834, 399668, 499585, 999170, 1998340, 4096597, 8193194, 16386388, 20482985, 40965970, 81931940]

約数ペア:

[(1, 81931940), (2, 40965970), (4, 20482985), (5, 16386388), (10, 8193194), (20, 4096597), (41, 1998340), (82, 999170), (164, 499585), (205, 399668), (410, 199834), (820, 99917), (1681, 48740), (2437, 33620), (3362, 24370), (4874, 16810), (6724, 12185), (8405, 9748)]