81426895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{10651}}^1$

素因数の和:10806

約数の個数: 16

約数和(自身を含む): 107372160

約数和(自身を除く): 25945265

約数列:

[1, 5, 11, 55, 139, 695, 1529, 7645, 10651, 53255, 117161, 585805, 1480489, 7402445, 16285379, 81426895]

約数ペア:

[(1, 81426895), (5, 16285379), (11, 7402445), (55, 1480489), (139, 585805), (695, 117161), (1529, 53255), (7645, 10651)]