808040

素因数分解:

$2^3\times 5^1\times {\mathrm{20201}}^1$

素因数の和:20212

約数の個数: 16

約数和(自身を含む): 1818180

約数和(自身を除く): 1010140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 20201, 40402, 80804, 101005, 161608, 202010, 404020, 808040]

約数ペア:

[(1, 808040), (2, 404020), (4, 202010), (5, 161608), (8, 101005), (10, 80804), (20, 40402), (40, 20201)]