20215900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{6971}}^1$

素因数の和:7014

約数の個数: 36

約数和(自身を含む): 45387720

約数和(自身を除く): 25171820

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 6971, 13942, 27884, 34855, 69710, 139420, 174275, 202159, 348550, 404318, 697100, 808636, 1010795, 2021590, 4043180, 5053975, 10107950, 20215900]

約数ペア:

[(1, 20215900), (2, 10107950), (4, 5053975), (5, 4043180), (10, 2021590), (20, 1010795), (25, 808636), (29, 697100), (50, 404318), (58, 348550), (100, 202159), (116, 174275), (145, 139420), (290, 69710), (580, 34855), (725, 27884), (1450, 13942), (2900, 6971)]