21376521

素因数分解:

$3^3\times {\mathrm{137}}^1\times {\mathrm{5779}}^1$

素因数の和:5925

約数の個数: 16

約数和(自身を含む): 31905600

約数和(自身を除く): 10529079

約数列:

[1, 3, 9, 27, 137, 411, 1233, 3699, 5779, 17337, 52011, 156033, 791723, 2375169, 7125507, 21376521]

約数ペア:

[(1, 21376521), (3, 7125507), (9, 2375169), (27, 791723), (137, 156033), (411, 52011), (1233, 17337), (3699, 5779)]