The product of natural numbers from 1 to n can be written as n! ． For example, 5! =1*2*3*4*5=120． To make n! Can be divisible by 990, what is the minimum value of n?
自然数从1至n的乘积可以写成n！．例如，5！=1*2*3*4*5=120．要使n！可以被990整除，问n的最小值等于多少．
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