865000490

素因数分解:

$2^1\times 5^1\times {\mathrm{1279}}^1\times {\mathrm{67631}}^1$

素因数の和:68917

約数の個数: 16

約数和(自身を含む): 1558241280

約数和(自身を除く): 693240790

約数列:

[1, 2, 5, 10, 1279, 2558, 6395, 12790, 67631, 135262, 338155, 676310, 86500049, 173000098, 432500245, 865000490]

約数ペア:

[(1, 865000490), (2, 432500245), (5, 173000098), (10, 86500049), (1279, 676310), (2558, 338155), (6395, 135262), (12790, 67631)]