28510000

素因数分解:

$2^4\times 5^4\times {\mathrm{2851}}^1$

素因数の和:2879

約数の個数: 50

約数和(自身を含む): 69049772

約数和(自身を除く): 40539772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 2851, 5000, 5702, 10000, 11404, 14255, 22808, 28510, 45616, 57020, 71275, 114040, 142550, 228080, 285100, 356375, 570200, 712750, 1140400, 1425500, 1781875, 2851000, 3563750, 5702000, 7127500, 14255000, 28510000]

約数ペア:

[(1, 28510000), (2, 14255000), (4, 7127500), (5, 5702000), (8, 3563750), (10, 2851000), (16, 1781875), (20, 1425500), (25, 1140400), (40, 712750), (50, 570200), (80, 356375), (100, 285100), (125, 228080), (200, 142550), (250, 114040), (400, 71275), (500, 57020), (625, 45616), (1000, 28510), (1250, 22808), (2000, 14255), (2500, 11404), (2851, 10000), (5000, 5702)]