2580450020

素因数分解:

$2^2\times 5^1\times {\mathrm{129022501}}^1$

素因数の和:129022510

約数の個数: 12

約数和(自身を含む): 5418945084

約数和(自身を除く): 2838495064

約数列:

[1, 2, 4, 5, 10, 20, 129022501, 258045002, 516090004, 645112505, 1290225010, 2580450020]

約数ペア:

[(1, 2580450020), (2, 1290225010), (4, 645112505), (5, 516090004), (10, 258045002), (20, 129022501)]