51057680

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1279}}^1$

素因数の和:1791

約数の個数: 40

約数和(自身を含む): 119040000

約数和(自身を除く): 67982320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 998, 1279, 1996, 2495, 2558, 3992, 4990, 5116, 6395, 7984, 9980, 10232, 12790, 19960, 20464, 25580, 39920, 51160, 102320, 638221, 1276442, 2552884, 3191105, 5105768, 6382210, 10211536, 12764420, 25528840, 51057680]

約数ペア:

[(1, 51057680), (2, 25528840), (4, 12764420), (5, 10211536), (8, 6382210), (10, 5105768), (16, 3191105), (20, 2552884), (40, 1276442), (80, 638221), (499, 102320), (998, 51160), (1279, 39920), (1996, 25580), (2495, 20464), (2558, 19960), (3992, 12790), (4990, 10232), (5116, 9980), (6395, 7984)]