#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cstdlib>
#include<cmath>
#include<vector>
#include<stack>
#include<set>
#include<string>
#include<iostream>
#include<map>
#pragma comment(linker,"/STACK:102400000,102400000") 
using namespace std;
unsigned euler(unsigned x){// 就是公式
    unsigned i, res=x;
    for (i = 2; i < (int)sqrt(x * 1.0) + 1; i++){
        if(x%i==0) {
            res = res / i * (i - 1);
            while (x % i == 0) x /= i; // 保证i一定是素数
        }
    }
    if (x > 1) res = res / x * (x - 1);
    return res;
}
int main(){
    int i,j,m,n,T,t;
    scanf("%d",&T);
    while(T--){
        scanf("%d",&n);
        printf("%d\n",euler(n+1));
    }
    return 0;
}