21528873

素因数分解:

$3^2\times {\mathrm{113}}^1\times {\mathrm{21169}}^1$

素因数の和:21288

約数の個数: 12

約数和(自身を含む): 31373940

約数和(自身を除く): 9845067

約数列:

[1, 3, 9, 113, 339, 1017, 21169, 63507, 190521, 2392097, 7176291, 21528873]

約数ペア:

[(1, 21528873), (3, 7176291), (9, 2392097), (113, 190521), (339, 63507), (1017, 21169)]