68340040

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{2081}}^1$

素因数の和:2913

約数の個数: 32

約数和(自身を含む): 154026360

約数和(自身を除く): 85686320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 2081, 3284, 4105, 4162, 6568, 8210, 8324, 10405, 16420, 16648, 20810, 32840, 41620, 83240, 1708501, 3417002, 6834004, 8542505, 13668008, 17085010, 34170020, 68340040]

約数ペア:

[(1, 68340040), (2, 34170020), (4, 17085010), (5, 13668008), (8, 8542505), (10, 6834004), (20, 3417002), (40, 1708501), (821, 83240), (1642, 41620), (2081, 32840), (3284, 20810), (4105, 16648), (4162, 16420), (6568, 10405), (8210, 8324)]