Given that a, B and C are all positive integers, and ABC = 2008, then the minimum value of a + B + C is______ .

Given that a, B and C are all positive integers, and ABC = 2008, then the minimum value of a + B + C is______ .

If we decompose 2008 into factors, we can get 2008 = 2 × 2 × 2 × 251, (251 is a prime number). A, B, C have the following possibilities: ① 1, 8251; ② 2, 4251; ③ 1, 4502; ④ 1, 12008. Easy to get, the minimum value of 2 + 4 + 251, the minimum value of a + B + C is 257. So the answer is 257