199989100

素因数分解:

$2^2\times 5^2\times {\mathrm{1999891}}^1$

素因数の和:1999905

約数の個数: 18

約数和(自身を含む): 433976564

約数和(自身を除く): 233987464

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 1999891, 3999782, 7999564, 9999455, 19998910, 39997820, 49997275, 99994550, 199989100]

約数ペア:

[(1, 199989100), (2, 99994550), (4, 49997275), (5, 39997820), (10, 19998910), (20, 9999455), (25, 7999564), (50, 3999782), (100, 1999891)]