86990681

素因数分解:

${\mathrm{31}}^2\times {\mathrm{131}}^1\times {\mathrm{691}}^1$

素因数の和:884

約数の個数: 12

約数和(自身を含む): 90704592

約数和(自身を除く): 3713911

約数列:

[1, 31, 131, 691, 961, 4061, 21421, 90521, 125891, 664051, 2806151, 86990681]

約数ペア:

[(1, 86990681), (31, 2806151), (131, 664051), (691, 125891), (961, 90521), (4061, 21421)]