198033820

素因数分解:

$2^2\times 5^1\times {\mathrm{9901691}}^1$

素因数の和:9901700

約数の個数: 12

約数和(自身を含む): 415871064

約数和(自身を除く): 217837244

約数列:

[1, 2, 4, 5, 10, 20, 9901691, 19803382, 39606764, 49508455, 99016910, 198033820]

約数ペア:

[(1, 198033820), (2, 99016910), (4, 49508455), (5, 39606764), (10, 19803382), (20, 9901691)]