204912080

素因数分解:

$2^4\times 5^1\times {\mathrm{2561401}}^1$

素因数の和:2561414

約数の個数: 20

約数和(自身を含む): 476420772

約数和(自身を除く): 271508692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2561401, 5122802, 10245604, 12807005, 20491208, 25614010, 40982416, 51228020, 102456040, 204912080]

約数ペア:

[(1, 204912080), (2, 102456040), (4, 51228020), (5, 40982416), (8, 25614010), (10, 20491208), (16, 12807005), (20, 10245604), (40, 5122802), (80, 2561401)]