1 #include <iostream>
 2 #include <algorithm>
 3 using namespace std;
 4 int n,m,t;
 5 int deal(int x,int y)
 6 {
 7     int sum=0;
 8     for(int i=1;i<x;i++){
 9         if(x%i==0){
10             sum+=i;
11         }
12     }
13     return sum==y;
14 }
15 int main()
16 {
17     while(cin>>t){
18         while(t--){
19             cin>>n>>m;
20             if(deal(n,m)&&deal(m,n)) cout<<"YES"<<endl;
21             else cout<<"NO"<<endl;
22         }
23     }
24     return 0;
25 }