21527009

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{701}}^1$

素因数の和:856

約数の個数: 16

約数和(自身を含む): 25474176

約数和(自身を除く): 3947167

約数列:

[1, 7, 41, 107, 287, 701, 749, 4387, 4907, 28741, 30709, 75007, 201187, 525049, 3075287, 21527009]

約数ペア:

[(1, 21527009), (7, 3075287), (41, 525049), (107, 201187), (287, 75007), (701, 30709), (749, 28741), (4387, 4907)]