20213020

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1231}}^1$

素因数の和:2061

約数の個数: 24

約数和(自身を含む): 42533568

約数和(自身を除く): 22320548

約数列:

[1, 2, 4, 5, 10, 20, 821, 1231, 1642, 2462, 3284, 4105, 4924, 6155, 8210, 12310, 16420, 24620, 1010651, 2021302, 4042604, 5053255, 10106510, 20213020]

約数ペア:

[(1, 20213020), (2, 10106510), (4, 5053255), (5, 4042604), (10, 2021302), (20, 1010651), (821, 24620), (1231, 16420), (1642, 12310), (2462, 8210), (3284, 6155), (4105, 4924)]