8080400

素因数分解:

$2^4\times 5^2\times {\mathrm{20201}}^1$

素因数の和:20219

約数の個数: 30

約数和(自身を含む): 19414122

約数和(自身を除く): 11333722

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 20201, 40402, 80804, 101005, 161608, 202010, 323216, 404020, 505025, 808040, 1010050, 1616080, 2020100, 4040200, 8080400]

約数ペア:

[(1, 8080400), (2, 4040200), (4, 2020100), (5, 1616080), (8, 1010050), (10, 808040), (16, 505025), (20, 404020), (25, 323216), (40, 202010), (50, 161608), (80, 101005), (100, 80804), (200, 40402), (400, 20201)]