20128765

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7639}}^1$

素因数の和:7692

約数の個数: 16

約数和(自身を含む): 26403840

約数和(自身を除く): 6275075

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 7639, 38195, 129863, 236809, 649315, 1184045, 4025753, 20128765]

約数ペア:

[(1, 20128765), (5, 4025753), (17, 1184045), (31, 649315), (85, 236809), (155, 129863), (527, 38195), (2635, 7639)]