1996000

素因数分解:

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

素因数の和:524

約数の個数: 48

約数和(自身を含む): 4914000

約数和(自身を除く): 2918000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 499, 500, 800, 998, 1000, 1996, 2000, 2495, 3992, 4000, 4990, 7984, 9980, 12475, 15968, 19960, 24950, 39920, 49900, 62375, 79840, 99800, 124750, 199600, 249500, 399200, 499000, 998000, 1996000]

約数ペア:

[(1, 1996000), (2, 998000), (4, 499000), (5, 399200), (8, 249500), (10, 199600), (16, 124750), (20, 99800), (25, 79840), (32, 62375), (40, 49900), (50, 39920), (80, 24950), (100, 19960), (125, 15968), (160, 12475), (200, 9980), (250, 7984), (400, 4990), (499, 4000), (500, 3992), (800, 2495), (998, 2000), (1000, 1996)]