82319620

素因数分解:

$2^2\times 5^1\times {\mathrm{4115981}}^1$

素因数の和:4115990

約数の個数: 12

約数和(自身を含む): 172871244

約数和(自身を除く): 90551624

約数列:

[1, 2, 4, 5, 10, 20, 4115981, 8231962, 16463924, 20579905, 41159810, 82319620]

約数ペア:

[(1, 82319620), (2, 41159810), (4, 20579905), (5, 16463924), (10, 8231962), (20, 4115981)]