20090165080

素因数分解:

$2^3\times 5^1\times {\mathrm{502254127}}^1$

素因数の和:502254138

約数の個数: 16

約数和(自身を含む): 45202871520

約数和(自身を除く): 25112706440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 502254127, 1004508254, 2009016508, 2511270635, 4018033016, 5022541270, 10045082540, 20090165080]

約数ペア:

[(1, 20090165080), (2, 10045082540), (4, 5022541270), (5, 4018033016), (8, 2511270635), (10, 2009016508), (20, 1004508254), (40, 502254127)]