2020100

素因数分解:

$2^2\times 5^2\times {\mathrm{20201}}^1$

素因数の和:20215

約数の個数: 18

約数和(自身を含む): 4383834

約数和(自身を除く): 2363734

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 20201, 40402, 80804, 101005, 202010, 404020, 505025, 1010050, 2020100]

約数ペア:

[(1, 2020100), (2, 1010050), (4, 505025), (5, 404020), (10, 202010), (20, 101005), (25, 80804), (50, 40402), (100, 20201)]