25528840

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1279}}^1$

素因数の和:1789

約数の個数: 32

約数和(自身を含む): 57600000

約数和(自身を除く): 32071160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1279, 1996, 2495, 2558, 3992, 4990, 5116, 6395, 9980, 10232, 12790, 19960, 25580, 51160, 638221, 1276442, 2552884, 3191105, 5105768, 6382210, 12764420, 25528840]

約数ペア:

[(1, 25528840), (2, 12764420), (4, 6382210), (5, 5105768), (8, 3191105), (10, 2552884), (20, 1276442), (40, 638221), (499, 51160), (998, 25580), (1279, 19960), (1996, 12790), (2495, 10232), (2558, 9980), (3992, 6395), (4990, 5116)]