20520153

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 30576000

約数和(自身を除く): 10055847

約数列:

[1, 3, 9, 47, 139, 141, 349, 417, 423, 1047, 1251, 3141, 6533, 16403, 19599, 48511, 49209, 58797, 145533, 147627, 436599, 2280017, 6840051, 20520153]

約数ペア:

[(1, 20520153), (3, 6840051), (9, 2280017), (47, 436599), (139, 147627), (141, 145533), (349, 58797), (417, 49209), (423, 48511), (1047, 19599), (1251, 16403), (3141, 6533)]