7960000

素因数分解:

$2^6\times 5^4\times {\mathrm{199}}^1$

素因数の和:231

約数の個数: 70

約数和(自身を含む): 19837400

約数和(自身を除く): 11877400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 199, 200, 250, 320, 398, 400, 500, 625, 796, 800, 995, 1000, 1250, 1592, 1600, 1990, 2000, 2500, 3184, 3980, 4000, 4975, 5000, 6368, 7960, 8000, 9950, 10000, 12736, 15920, 19900, 20000, 24875, 31840, 39800, 40000, 49750, 63680, 79600, 99500, 124375, 159200, 199000, 248750, 318400, 398000, 497500, 796000, 995000, 1592000, 1990000, 3980000, 7960000]

約数ペア:

[(1, 7960000), (2, 3980000), (4, 1990000), (5, 1592000), (8, 995000), (10, 796000), (16, 497500), (20, 398000), (25, 318400), (32, 248750), (40, 199000), (50, 159200), (64, 124375), (80, 99500), (100, 79600), (125, 63680), (160, 49750), (199, 40000), (200, 39800), (250, 31840), (320, 24875), (398, 20000), (400, 19900), (500, 15920), (625, 12736), (796, 10000), (800, 9950), (995, 8000), (1000, 7960), (1250, 6368), (1592, 5000), (1600, 4975), (1990, 4000), (2000, 3980), (2500, 3184)]