19855600

素因数分解:

$2^4\times 5^2\times {\mathrm{49639}}^1$

素因数の和:49657

約数の個数: 30

約数和(自身を含む): 47704040

約数和(自身を除く): 27848440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 49639, 99278, 198556, 248195, 397112, 496390, 794224, 992780, 1240975, 1985560, 2481950, 3971120, 4963900, 9927800, 19855600]

約数ペア:

[(1, 19855600), (2, 9927800), (4, 4963900), (5, 3971120), (8, 2481950), (10, 1985560), (16, 1240975), (20, 992780), (25, 794224), (40, 496390), (50, 397112), (80, 248195), (100, 198556), (200, 99278), (400, 49639)]