12790000

素因数分解:

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

素因数の和:1307

約数の個数: 50

約数和(自身を含む): 30990080

約数和(自身を除く): 18200080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1279, 2000, 2500, 2558, 5000, 5116, 6395, 10000, 10232, 12790, 20464, 25580, 31975, 51160, 63950, 102320, 127900, 159875, 255800, 319750, 511600, 639500, 799375, 1279000, 1598750, 2558000, 3197500, 6395000, 12790000]

約数ペア:

[(1, 12790000), (2, 6395000), (4, 3197500), (5, 2558000), (8, 1598750), (10, 1279000), (16, 799375), (20, 639500), (25, 511600), (40, 319750), (50, 255800), (80, 159875), (100, 127900), (125, 102320), (200, 63950), (250, 51160), (400, 31975), (500, 25580), (625, 20464), (1000, 12790), (1250, 10232), (1279, 10000), (2000, 6395), (2500, 5116), (2558, 5000)]