156657640

素因数分解:

$2^3\times 5^1\times {\mathrm{1979}}^2$

素因数の和:3969

約数の個数: 24

約数和(自身を含む): 352657890

約数和(自身を除く): 196000250

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1979, 3958, 7916, 9895, 15832, 19790, 39580, 79160, 3916441, 7832882, 15665764, 19582205, 31331528, 39164410, 78328820, 156657640]

約数ペア:

[(1, 156657640), (2, 78328820), (4, 39164410), (5, 31331528), (8, 19582205), (10, 15665764), (20, 7832882), (40, 3916441), (1979, 79160), (3958, 39580), (7916, 19790), (9895, 15832)]