80805520

素因数分解:

$2^4\times 5^1\times {\mathrm{1010069}}^1$

素因数の和:1010082

約数の個数: 20

約数和(自身を含む): 187873020

約数和(自身を除く): 107067500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1010069, 2020138, 4040276, 5050345, 8080552, 10100690, 16161104, 20201380, 40402760, 80805520]

約数ペア:

[(1, 80805520), (2, 40402760), (4, 20201380), (5, 16161104), (8, 10100690), (10, 8080552), (16, 5050345), (20, 4040276), (40, 2020138), (80, 1010069)]