20390587

素因数分解:

$7^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:450

約数の個数: 16

約数和(自身を含む): 23814144

約数和(自身を除く): 3423557

約数列:

[1, 7, 101, 151, 191, 707, 1057, 1337, 15251, 19291, 28841, 106757, 135037, 201887, 2912941, 20390587]

約数ペア:

[(1, 20390587), (7, 2912941), (101, 201887), (151, 135037), (191, 106757), (707, 28841), (1057, 19291), (1337, 15251)]