204500720

素因数分解:

$2^4\times 5^1\times {\mathrm{2556259}}^1$

素因数の和:2556272

約数の個数: 20

約数和(自身を含む): 475464360

約数和(自身を除く): 270963640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2556259, 5112518, 10225036, 12781295, 20450072, 25562590, 40900144, 51125180, 102250360, 204500720]

約数ペア:

[(1, 204500720), (2, 102250360), (4, 51125180), (5, 40900144), (8, 25562590), (10, 20450072), (16, 12781295), (20, 10225036), (40, 5112518), (80, 2556259)]