81556165

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{2729}}^1$

素因数の和:2916

約数の個数: 16

約数和(自身を含む): 100900800

約数和(自身を除く): 19344635

約数列:

[1, 5, 43, 139, 215, 695, 2729, 5977, 13645, 29885, 117347, 379331, 586735, 1896655, 16311233, 81556165]

約数ペア:

[(1, 81556165), (5, 16311233), (43, 1896655), (139, 586735), (215, 379331), (695, 117347), (2729, 29885), (5977, 13645)]