19881621

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{24821}}^1$

素因数の和:24916

約数の個数: 12

約数和(自身を含む): 29041740

約数和(自身を除く): 9160119

約数列:

[1, 3, 9, 89, 267, 801, 24821, 74463, 223389, 2209069, 6627207, 19881621]

約数ペア:

[(1, 19881621), (3, 6627207), (9, 2209069), (89, 223389), (267, 74463), (801, 24821)]