21587111

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1571}}^1$

素因数の和:1742

約数の個数: 16

約数和(自身を含む): 26761728

約数和(自身を除く): 5174617

約数列:

[1, 7, 13, 91, 151, 1057, 1571, 1963, 10997, 13741, 20423, 142961, 237221, 1660547, 3083873, 21587111]

約数ペア:

[(1, 21587111), (7, 3083873), (13, 1660547), (91, 237221), (151, 142961), (1057, 20423), (1571, 13741), (1963, 10997)]