20905797

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{11953}}^1$

素因数の和:12020

約数の個数: 16

約数和(自身を含む): 30984768

約数和(自身を除く): 10078971

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 11953, 35859, 131483, 394449, 633509, 1900527, 6968599, 20905797]

約数ペア:

[(1, 20905797), (3, 6968599), (11, 1900527), (33, 633509), (53, 394449), (159, 131483), (583, 35859), (1749, 11953)]