21420906

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{274627}}^1$

素因数の和:274645

約数の個数: 16

約数和(自身を含む): 46137504

約数和(自身を除く): 24716598

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 274627, 549254, 823881, 1647762, 3570151, 7140302, 10710453, 21420906]

約数ペア:

[(1, 21420906), (2, 10710453), (3, 7140302), (6, 3570151), (13, 1647762), (26, 823881), (39, 549254), (78, 274627)]