20407840

素因数分解:

$2^5\times 5^1\times {\mathrm{127549}}^1$

素因数の和:127564

約数の個数: 24

約数和(自身を含む): 48213900

約数和(自身を除く): 27806060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 127549, 255098, 510196, 637745, 1020392, 1275490, 2040784, 2550980, 4081568, 5101960, 10203920, 20407840]

約数ペア:

[(1, 20407840), (2, 10203920), (4, 5101960), (5, 4081568), (8, 2550980), (10, 2040784), (16, 1275490), (20, 1020392), (32, 637745), (40, 510196), (80, 255098), (160, 127549)]