19857100

素因数分解:

$2^2\times 5^2\times {\mathrm{198571}}^1$

素因数の和:198585

約数の個数: 18

約数和(自身を含む): 43090124

約数和(自身を除く): 23233024

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 198571, 397142, 794284, 992855, 1985710, 3971420, 4964275, 9928550, 19857100]

約数ペア:

[(1, 19857100), (2, 9928550), (4, 4964275), (5, 3971420), (10, 1985710), (20, 992855), (25, 794284), (50, 397142), (100, 198571)]