808214180

素因数分解:

$2^2\times 5^1\times {\mathrm{40410709}}^1$

素因数の和:40410718

約数の個数: 12

約数和(自身を含む): 1697249820

約数和(自身を除く): 889035640

約数列:

[1, 2, 4, 5, 10, 20, 40410709, 80821418, 161642836, 202053545, 404107090, 808214180]

約数ペア:

[(1, 808214180), (2, 404107090), (4, 202053545), (5, 161642836), (10, 80821418), (20, 40410709)]