20188900

素因数分解:

$2^2\times 5^2\times {\mathrm{201889}}^1$

素因数の和:201903

約数の個数: 18

約数和(自身を含む): 43810130

約数和(自身を除く): 23621230

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 201889, 403778, 807556, 1009445, 2018890, 4037780, 5047225, 10094450, 20188900]

約数ペア:

[(1, 20188900), (2, 10094450), (4, 5047225), (5, 4037780), (10, 2018890), (20, 1009445), (25, 807556), (50, 403778), (100, 201889)]