28780157

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1\times {\mathrm{223}}^1$

素因数の和:512

約数の個数: 16

約数和(自身を含む): 33546240

約数和(自身を除く): 4766083

約数列:

[1, 7, 103, 179, 223, 721, 1253, 1561, 18437, 22969, 39917, 129059, 160783, 279419, 4111451, 28780157]

約数ペア:

[(1, 28780157), (7, 4111451), (103, 279419), (179, 160783), (223, 129059), (721, 39917), (1253, 22969), (1561, 18437)]