64874000

素因数分解:

$2^4\times 5^3\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:385

約数の個数: 80

約数和(自身を含む): 158620800

約数和(自身を除く): 93746800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 163, 199, 200, 250, 326, 398, 400, 500, 652, 796, 815, 995, 1000, 1304, 1592, 1630, 1990, 2000, 2608, 3184, 3260, 3980, 4075, 4975, 6520, 7960, 8150, 9950, 13040, 15920, 16300, 19900, 20375, 24875, 32437, 32600, 39800, 40750, 49750, 64874, 65200, 79600, 81500, 99500, 129748, 162185, 163000, 199000, 259496, 324370, 326000, 398000, 518992, 648740, 810925, 1297480, 1621850, 2594960, 3243700, 4054625, 6487400, 8109250, 12974800, 16218500, 32437000, 64874000]

約数ペア:

[(1, 64874000), (2, 32437000), (4, 16218500), (5, 12974800), (8, 8109250), (10, 6487400), (16, 4054625), (20, 3243700), (25, 2594960), (40, 1621850), (50, 1297480), (80, 810925), (100, 648740), (125, 518992), (163, 398000), (199, 326000), (200, 324370), (250, 259496), (326, 199000), (398, 163000), (400, 162185), (500, 129748), (652, 99500), (796, 81500), (815, 79600), (995, 65200), (1000, 64874), (1304, 49750), (1592, 40750), (1630, 39800), (1990, 32600), (2000, 32437), (2608, 24875), (3184, 20375), (3260, 19900), (3980, 16300), (4075, 15920), (4975, 13040), (6520, 9950), (7960, 8150)]