20512051

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:510

約数の個数: 16

約数和(自身を含む): 24018624

約数和(自身を除く): 3506573

約数列:

[1, 7, 73, 137, 293, 511, 959, 2051, 10001, 21389, 40141, 70007, 149723, 280987, 2930293, 20512051]

約数ペア:

[(1, 20512051), (7, 2930293), (73, 280987), (137, 149723), (293, 70007), (511, 40141), (959, 21389), (2051, 10001)]