20656280

素因数分解:

$2^3\times 5^1\times {\mathrm{516407}}^1$

素因数の和:516418

約数の個数: 16

約数和(自身を含む): 46476720

約数和(自身を除く): 25820440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 516407, 1032814, 2065628, 2582035, 4131256, 5164070, 10328140, 20656280]

約数ペア:

[(1, 20656280), (2, 10328140), (4, 5164070), (5, 4131256), (8, 2582035), (10, 2065628), (20, 1032814), (40, 516407)]