21395853

素因数分解:

$3^3\times {\mathrm{139}}^1\times {\mathrm{5701}}^1$

素因数の和:5849

約数の個数: 16

約数和(自身を含む): 31931200

約数和(自身を除く): 10535347

約数列:

[1, 3, 9, 27, 139, 417, 1251, 3753, 5701, 17103, 51309, 153927, 792439, 2377317, 7131951, 21395853]

約数ペア:

[(1, 21395853), (3, 7131951), (9, 2377317), (27, 792439), (139, 153927), (417, 51309), (1251, 17103), (3753, 5701)]