2495000

素因数分解:

$2^3\times 5^4\times {\mathrm{499}}^1$

素因数の和:525

約数の個数: 40

約数和(自身を含む): 5857500

約数和(自身を除く): 3362500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 499, 500, 625, 998, 1000, 1250, 1996, 2495, 2500, 3992, 4990, 5000, 9980, 12475, 19960, 24950, 49900, 62375, 99800, 124750, 249500, 311875, 499000, 623750, 1247500, 2495000]

約数ペア:

[(1, 2495000), (2, 1247500), (4, 623750), (5, 499000), (8, 311875), (10, 249500), (20, 124750), (25, 99800), (40, 62375), (50, 49900), (100, 24950), (125, 19960), (200, 12475), (250, 9980), (499, 5000), (500, 4990), (625, 3992), (998, 2500), (1000, 2495), (1250, 1996)]