64716980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{111581}}^1$

素因数の和:111619

約数の個数: 24

約数和(自身を含む): 140593320

約数和(自身を除く): 75876340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 111581, 223162, 446324, 557905, 1115810, 2231620, 3235849, 6471698, 12943396, 16179245, 32358490, 64716980]

約数ペア:

[(1, 64716980), (2, 32358490), (4, 16179245), (5, 12943396), (10, 6471698), (20, 3235849), (29, 2231620), (58, 1115810), (116, 557905), (145, 446324), (290, 223162), (580, 111581)]