12840685

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17959}}^1$

素因数の和:17988

約数の個数: 16

約数和(自身を含む): 18103680

約数和(自身を除く): 5262995

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 17959, 89795, 197549, 233467, 987745, 1167335, 2568137, 12840685]

約数ペア:

[(1, 12840685), (5, 2568137), (11, 1167335), (13, 987745), (55, 233467), (65, 197549), (143, 89795), (715, 17959)]