205505840

素因数分解:

$2^4\times 5^1\times {\mathrm{2568823}}^1$

素因数の和:2568836

約数の個数: 20

約数和(自身を含む): 477801264

約数和(自身を除く): 272295424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2568823, 5137646, 10275292, 12844115, 20550584, 25688230, 41101168, 51376460, 102752920, 205505840]

約数ペア:

[(1, 205505840), (2, 102752920), (4, 51376460), (5, 41101168), (8, 25688230), (10, 20550584), (16, 12844115), (20, 10275292), (40, 5137646), (80, 2568823)]