68985260

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{8867}}^1$

素因数の和:9265

約数の個数: 24

約数和(自身を含む): 145257840

約数和(自身を除く): 76272580

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 8867, 17734, 35468, 44335, 88670, 177340, 3449263, 6898526, 13797052, 17246315, 34492630, 68985260]

約数ペア:

[(1, 68985260), (2, 34492630), (4, 17246315), (5, 13797052), (10, 6898526), (20, 3449263), (389, 177340), (778, 88670), (1556, 44335), (1945, 35468), (3890, 17734), (7780, 8867)]