20975019

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11443}}^1$

素因数の和:11506

約数の個数: 16

約数和(自身を含む): 30761472

約数和(自身を除く): 9786453

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11443, 34329, 148759, 446277, 537821, 1613463, 6991673, 20975019]

約数ペア:

[(1, 20975019), (3, 6991673), (13, 1613463), (39, 537821), (47, 446277), (141, 148759), (611, 34329), (1833, 11443)]