51648880

素因数分解:

$2^4\times 5^1\times {\mathrm{645611}}^1$

素因数の和:645624

約数の個数: 20

約数和(自身を含む): 120083832

約数和(自身を除く): 68434952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 645611, 1291222, 2582444, 3228055, 5164888, 6456110, 10329776, 12912220, 25824440, 51648880]

約数ペア:

[(1, 51648880), (2, 25824440), (4, 12912220), (5, 10329776), (8, 6456110), (10, 5164888), (16, 3228055), (20, 2582444), (40, 1291222), (80, 645611)]