#include <cstdio>
#include <algorithm>
using namespace std;
int n;
int ans[1000];
int p;
int f(int x){
    int sum = 0;
    while(x){
        sum += x % 10;
        x /= 10;
    }
    return sum;
}
int main(){
    int T;
    scanf("%d", &T);
    while(T --){
        scanf("%d", &n);
        int s = f(n);
        p = 0;
        for(int i = 1; i <= s; ++ i){
            if(s % i == 0 && n % i == 0){
                ans[p ++] = i;
            }
        }
        printf("%d\n", p);
        for(int i = 0; i < p; ++ i){
            printf("%d%c", ans[i], " \n"[i == p-1]);
        }
    }
}