12764420

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1279}}^1$

素因数の和:1787

約数の個数: 24

約数和(自身を含む): 26880000

約数和(自身を除く): 14115580

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1279, 1996, 2495, 2558, 4990, 5116, 6395, 9980, 12790, 25580, 638221, 1276442, 2552884, 3191105, 6382210, 12764420]

約数ペア:

[(1, 12764420), (2, 6382210), (4, 3191105), (5, 2552884), (10, 1276442), (20, 638221), (499, 25580), (998, 12790), (1279, 9980), (1996, 6395), (2495, 5116), (2558, 4990)]