20676440

素因数分解:

$2^3\times 5^1\times {\mathrm{516911}}^1$

素因数の和:516922

約数の個数: 16

約数和(自身を含む): 46522080

約数和(自身を除く): 25845640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 516911, 1033822, 2067644, 2584555, 4135288, 5169110, 10338220, 20676440]

約数ペア:

[(1, 20676440), (2, 10338220), (4, 5169110), (5, 4135288), (8, 2584555), (10, 2067644), (20, 1033822), (40, 516911)]