51120880

素因数分解:

$2^4\times 5^1\times {\mathrm{639011}}^1$

素因数の和:639024

約数の個数: 20

約数和(自身を含む): 118856232

約数和(自身を除く): 67735352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 639011, 1278022, 2556044, 3195055, 5112088, 6390110, 10224176, 12780220, 25560440, 51120880]

約数ペア:

[(1, 51120880), (2, 25560440), (4, 12780220), (5, 10224176), (8, 6390110), (10, 5112088), (16, 3195055), (20, 2556044), (40, 1278022), (80, 639011)]