21640359

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{733}}^1\times {\mathrm{757}}^1$

素因数の和:1506

約数の個数: 16

約数和(自身を含む): 31156832

約数和(自身を除く): 9516473

約数列:

[1, 3, 13, 39, 733, 757, 2199, 2271, 9529, 9841, 28587, 29523, 554881, 1664643, 7213453, 21640359]

約数ペア:

[(1, 21640359), (3, 7213453), (13, 1664643), (39, 554881), (733, 29523), (757, 28587), (2199, 9841), (2271, 9529)]