#include<bits/stdc++.h>
using namespace std;
int main()
{
int t;
cin >> t;
while(t--){
int n;
cin >> n ;
long long ara[n+1];
for(int i = 1 ; i <= n ; i++)
cin >> ara[i];
vector<int> v;
int noB [32];
int c =0 ;
for(int j = 1 ; j<= 31; j++)
{
int cr = 0;
for(int i = 1 ; i <= n; i++)
{
if(ara[i]&(1 << j-1))cr++;
}
noB[j] = cr;
}
for(int i = 1 ; i <= n ; i++)
{
int cnt = 0;
for(int k = 1 ; k <=30;k++)
{
if(noB[k] % i == 0)
{
continue;
}
else cnt++;
}
if(cnt == 0)cout << i << " ";
}
cout << endl;
}
}
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