20201800

素因数分解:

$2^3\times 5^2\times {\mathrm{101009}}^1$

素因数の和:101025

約数の個数: 24

約数和(自身を含む): 46969650

約数和(自身を除く): 26767850

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 101009, 202018, 404036, 505045, 808072, 1010090, 2020180, 2525225, 4040360, 5050450, 10100900, 20201800]

約数ペア:

[(1, 20201800), (2, 10100900), (4, 5050450), (5, 4040360), (8, 2525225), (10, 2020180), (20, 1010090), (25, 808072), (40, 505045), (50, 404036), (100, 202018), (200, 101009)]