19992760

素因数分解:

$2^3\times 5^1\times {\mathrm{499819}}^1$

素因数の和:499830

約数の個数: 16

約数和(自身を含む): 44983800

約数和(自身を除く): 24991040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499819, 999638, 1999276, 2499095, 3998552, 4998190, 9996380, 19992760]

約数ペア:

[(1, 19992760), (2, 9996380), (4, 4998190), (5, 3998552), (8, 2499095), (10, 1999276), (20, 999638), (40, 499819)]