81719905

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{2729}}^1$

素因数の和:2900

約数の個数: 16

約数和(自身を含む): 100835280

約数和(自身を除く): 19115375

約数列:

[1, 5, 53, 113, 265, 565, 2729, 5989, 13645, 29945, 144637, 308377, 723185, 1541885, 16343981, 81719905]

約数ペア:

[(1, 81719905), (5, 16343981), (53, 1541885), (113, 723185), (265, 308377), (565, 144637), (2729, 29945), (5989, 13645)]