19894040

素因数分解:

$2^3\times 5^1\times {\mathrm{497351}}^1$

素因数の和:497362

約数の個数: 16

約数和(自身を含む): 44761680

約数和(自身を除く): 24867640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497351, 994702, 1989404, 2486755, 3978808, 4973510, 9947020, 19894040]

約数ペア:

[(1, 19894040), (2, 9947020), (4, 4973510), (5, 3978808), (8, 2486755), (10, 1989404), (20, 994702), (40, 497351)]