#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
  int q,n,j=0,f=0;
    cin>>q;
    while(q--)
        {
           cin>>n;
          n*=2;
        int a[n];
        for(int i=0;i<n;i++)cin>>a[i];
        sort(a,a+n);
        int k=a[n-1];
        for(int i=0;i<n;i++)
            
              if(a[i]%k!=0)f=1;
        
                 
       
        
        if(f==0)cout<<"YES"<<endl;
        else
            cout<<"NO"<<endl;
    }
    
    return 0;
}