12974800

素因数分解:

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

素因数の和:380

約数の個数: 60

約数和(自身を含む): 31520800

約数和(自身を除く): 18546000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 163, 199, 200, 326, 398, 400, 652, 796, 815, 995, 1304, 1592, 1630, 1990, 2608, 3184, 3260, 3980, 4075, 4975, 6520, 7960, 8150, 9950, 13040, 15920, 16300, 19900, 32437, 32600, 39800, 64874, 65200, 79600, 129748, 162185, 259496, 324370, 518992, 648740, 810925, 1297480, 1621850, 2594960, 3243700, 6487400, 12974800]

約数ペア:

[(1, 12974800), (2, 6487400), (4, 3243700), (5, 2594960), (8, 1621850), (10, 1297480), (16, 810925), (20, 648740), (25, 518992), (40, 324370), (50, 259496), (80, 162185), (100, 129748), (163, 79600), (199, 65200), (200, 64874), (326, 39800), (398, 32600), (400, 32437), (652, 19900), (796, 16300), (815, 15920), (995, 13040), (1304, 9950), (1592, 8150), (1630, 7960), (1990, 6520), (2608, 4975), (3184, 4075), (3260, 3980)]