19972900

素因数分解:

$2^2\times 5^2\times {\mathrm{199729}}^1$

素因数の和:199743

約数の個数: 18

約数和(自身を含む): 43341410

約数和(自身を除く): 23368510

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199729, 399458, 798916, 998645, 1997290, 3994580, 4993225, 9986450, 19972900]

約数ペア:

[(1, 19972900), (2, 9986450), (4, 4993225), (5, 3994580), (10, 1997290), (20, 998645), (25, 798916), (50, 399458), (100, 199729)]