20980287

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{32833}}^1$

素因数の和:32910

約数の個数: 12

約数和(自身を含む): 30732624

約数和(自身を除く): 9752337

約数列:

[1, 3, 9, 71, 213, 639, 32833, 98499, 295497, 2331143, 6993429, 20980287]

約数ペア:

[(1, 20980287), (3, 6993429), (9, 2331143), (71, 295497), (213, 98499), (639, 32833)]