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codeforces-divide it solution 

#include<bits/stdc++.h>
using namespace std;
void fun(long long n,int count)
{
 if(n==1)
  cout<< count<<endl;
 else if(n%2!=0 and n%3!=0 and n%5!=0)
  cout<<"-1"<<endl;
 if(n%5==0)
 {
  n=(4*n)/5;
  count++;
  fun(n,count);
 }
 else if(n%3==0)
 {
  n=(2*n)/3;
  count++;
  fun(n,count);
 }
 else if(n%2==0)
 {
  n=n/2;
  count++;
  fun(n,count);
 }
}
int main()
{
 int q;
 cin>>q;
 for(int i=1;i<=q;i++)
 {
  long long x;
  cin>>x;
  fun(x,0);
 }
 return 0;

}

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