65685980

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{6689}}^1$

素因数の和:7189

約数の個数: 24

約数和(自身を含む): 138242160

約数和(自身を除く): 72556180

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 6689, 9820, 13378, 26756, 33445, 66890, 133780, 3284299, 6568598, 13137196, 16421495, 32842990, 65685980]

約数ペア:

[(1, 65685980), (2, 32842990), (4, 16421495), (5, 13137196), (10, 6568598), (20, 3284299), (491, 133780), (982, 66890), (1964, 33445), (2455, 26756), (4910, 13378), (6689, 9820)]