4385020

素因数分解:

$2^2\times 5^1\times {\mathrm{219251}}^1$

素因数の和:219260

約数の個数: 12

約数和(自身を含む): 9208584

約数和(自身を除く): 4823564

約数列:

[1, 2, 4, 5, 10, 20, 219251, 438502, 877004, 1096255, 2192510, 4385020]

約数ペア:

[(1, 4385020), (2, 2192510), (4, 1096255), (5, 877004), (10, 438502), (20, 219251)]