20880805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{857}}^1$

素因数の和:1316

約数の個数: 16

約数和(自身を含む): 27428544

約数和(自身を除く): 6547739

約数列:

[1, 5, 11, 55, 443, 857, 2215, 4285, 4873, 9427, 24365, 47135, 379651, 1898255, 4176161, 20880805]

約数ペア:

[(1, 20880805), (5, 4176161), (11, 1898255), (55, 379651), (443, 47135), (857, 24365), (2215, 9427), (4285, 4873)]