20010905

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:496

約数の個数: 16

約数和(自身を含む): 24482304

約数和(自身を除く): 4471399

約数列:

[1, 5, 131, 137, 223, 655, 685, 1115, 17947, 29213, 30551, 89735, 146065, 152755, 4002181, 20010905]

約数ペア:

[(1, 20010905), (5, 4002181), (131, 152755), (137, 146065), (223, 89735), (655, 30551), (685, 29213), (1115, 17947)]