20168080

素因数分解:

$2^4\times 5^1\times {\mathrm{252101}}^1$

素因数の和:252114

約数の個数: 20

約数和(自身を含む): 46890972

約数和(自身を除く): 26722892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252101, 504202, 1008404, 1260505, 2016808, 2521010, 4033616, 5042020, 10084040, 20168080]

約数ペア:

[(1, 20168080), (2, 10084040), (4, 5042020), (5, 4033616), (8, 2521010), (10, 2016808), (16, 1260505), (20, 1008404), (40, 504202), (80, 252101)]