20751895

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{3581}}^1$

素因数の和:3666

約数の個数: 16

約数和(自身を含む): 26650080

約数和(自身を除く): 5898185

約数列:

[1, 5, 19, 61, 95, 305, 1159, 3581, 5795, 17905, 68039, 218441, 340195, 1092205, 4150379, 20751895]

約数ペア:

[(1, 20751895), (5, 4150379), (19, 1092205), (61, 340195), (95, 218441), (305, 68039), (1159, 17905), (3581, 5795)]