51760

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1$

素因数の和:660

約数の個数: 20

約数和(自身を含む): 120528

約数和(自身を除く): 68768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1294, 2588, 3235, 5176, 6470, 10352, 12940, 25880, 51760]

約数ペア:

[(1, 51760), (2, 25880), (4, 12940), (5, 10352), (8, 6470), (10, 5176), (16, 3235), (20, 2588), (40, 1294), (80, 647)]