1291260340

素因数分解:

$2^2\times 5^1\times {\mathrm{64563017}}^1$

素因数の和:64563026

約数の個数: 12

約数和(自身を含む): 2711646756

約数和(自身を除く): 1420386416

約数列:

[1, 2, 4, 5, 10, 20, 64563017, 129126034, 258252068, 322815085, 645630170, 1291260340]

約数ペア:

[(1, 1291260340), (2, 645630170), (4, 322815085), (5, 258252068), (10, 129126034), (20, 64563017)]