78968980

素因数分解:

$2^2\times 5^1\times {\mathrm{1531}}^1\times {\mathrm{2579}}^1$

素因数の和:4119

約数の個数: 24

約数和(自身を含む): 166007520

約数和(自身を除く): 87038540

約数列:

[1, 2, 4, 5, 10, 20, 1531, 2579, 3062, 5158, 6124, 7655, 10316, 12895, 15310, 25790, 30620, 51580, 3948449, 7896898, 15793796, 19742245, 39484490, 78968980]

約数ペア:

[(1, 78968980), (2, 39484490), (4, 19742245), (5, 15793796), (10, 7896898), (20, 3948449), (1531, 51580), (2579, 30620), (3062, 25790), (5158, 15310), (6124, 12895), (7655, 10316)]