3992000

素因数分解:

$2^6\times 5^3\times {\mathrm{499}}^1$

素因数の和:526

約数の個数: 56

約数和(自身を含む): 9906000

約数和(自身を除く): 5914000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 499, 500, 800, 998, 1000, 1600, 1996, 2000, 2495, 3992, 4000, 4990, 7984, 8000, 9980, 12475, 15968, 19960, 24950, 31936, 39920, 49900, 62375, 79840, 99800, 124750, 159680, 199600, 249500, 399200, 499000, 798400, 998000, 1996000, 3992000]

約数ペア:

[(1, 3992000), (2, 1996000), (4, 998000), (5, 798400), (8, 499000), (10, 399200), (16, 249500), (20, 199600), (25, 159680), (32, 124750), (40, 99800), (50, 79840), (64, 62375), (80, 49900), (100, 39920), (125, 31936), (160, 24950), (200, 19960), (250, 15968), (320, 12475), (400, 9980), (499, 8000), (500, 7984), (800, 4990), (998, 4000), (1000, 3992), (1600, 2495), (1996, 2000)]