717680680

素因数分解:

$2^3\times 5^1\times {\mathrm{17942017}}^1$

素因数の和:17942028

約数の個数: 16

約数和(自身を含む): 1614781620

約数和(自身を除く): 897100940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 17942017, 35884034, 71768068, 89710085, 143536136, 179420170, 358840340, 717680680]

約数ペア:

[(1, 717680680), (2, 358840340), (4, 179420170), (5, 143536136), (8, 89710085), (10, 71768068), (20, 35884034), (40, 17942017)]