20215150

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4003}}^1$

素因数の和:4116

約数の個数: 24

約数和(自身を含む): 37981944

約数和(自身を除く): 17766794

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 4003, 5050, 8006, 20015, 40030, 100075, 200150, 404303, 808606, 2021515, 4043030, 10107575, 20215150]

約数ペア:

[(1, 20215150), (2, 10107575), (5, 4043030), (10, 2021515), (25, 808606), (50, 404303), (101, 200150), (202, 100075), (505, 40030), (1010, 20015), (2525, 8006), (4003, 5050)]