80785520

素因数分解:

$2^4\times 5^1\times {\mathrm{1009819}}^1$

素因数の和:1009832

約数の個数: 20

約数和(自身を含む): 187826520

約数和(自身を除く): 107041000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1009819, 2019638, 4039276, 5049095, 8078552, 10098190, 16157104, 20196380, 40392760, 80785520]

約数ペア:

[(1, 80785520), (2, 40392760), (4, 20196380), (5, 16157104), (8, 10098190), (10, 8078552), (16, 5049095), (20, 4039276), (40, 2019638), (80, 1009819)]