20565620

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10181}}^1$

素因数の和:10291

約数の個数: 24

約数和(自身を含む): 43619688

約数和(自身を除く): 23054068

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10181, 20362, 40724, 50905, 101810, 203620, 1028281, 2056562, 4113124, 5141405, 10282810, 20565620]

約数ペア:

[(1, 20565620), (2, 10282810), (4, 5141405), (5, 4113124), (10, 2056562), (20, 1028281), (101, 203620), (202, 101810), (404, 50905), (505, 40724), (1010, 20362), (2020, 10181)]