7996000

素因数分解:

$2^5\times 5^3\times {\mathrm{1999}}^1$

素因数の和:2024

約数の個数: 48

約数和(自身を含む): 19656000

約数和(自身を除く): 11660000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 1999, 2000, 3998, 4000, 7996, 9995, 15992, 19990, 31984, 39980, 49975, 63968, 79960, 99950, 159920, 199900, 249875, 319840, 399800, 499750, 799600, 999500, 1599200, 1999000, 3998000, 7996000]

約数ペア:

[(1, 7996000), (2, 3998000), (4, 1999000), (5, 1599200), (8, 999500), (10, 799600), (16, 499750), (20, 399800), (25, 319840), (32, 249875), (40, 199900), (50, 159920), (80, 99950), (100, 79960), (125, 63968), (160, 49975), (200, 39980), (250, 31984), (400, 19990), (500, 15992), (800, 9995), (1000, 7996), (1999, 4000), (2000, 3998)]