2019982180

素因数分解:

$2^2\times 5^1\times {\mathrm{100999109}}^1$

素因数の和:100999118

約数の個数: 12

約数和(自身を含む): 4241962620

約数和(自身を除く): 2221980440

約数列:

[1, 2, 4, 5, 10, 20, 100999109, 201998218, 403996436, 504995545, 1009991090, 2019982180]

約数ペア:

[(1, 2019982180), (2, 1009991090), (4, 504995545), (5, 403996436), (10, 201998218), (20, 100999109)]