8750020

素因数分解:

$2^2\times 5^1\times {\mathrm{437501}}^1$

素因数の和:437510

約数の個数: 12

約数和(自身を含む): 18375084

約数和(自身を除く): 9625064

約数列:

[1, 2, 4, 5, 10, 20, 437501, 875002, 1750004, 2187505, 4375010, 8750020]

約数ペア:

[(1, 8750020), (2, 4375010), (4, 2187505), (5, 1750004), (10, 875002), (20, 437501)]