#include <cstdio>
#include <vector>

using namespace std;

int digit_sum(int v) {
    int ans = 0;
    while (v) {
        ans += v % 10;
        v /= 10;
    }
    return ans;
}
int main() {
    int T;

    scanf("%d", &T);
    while (T--) {
        int v;
        vector<int> as;

        scanf("%d", &v);
        int s = digit_sum(v);
        for (int x = 1; x <= s; ++x) {
            if (s % x == 0 && v % x == 0) {
                as.push_back(x);
            }
        }
        printf("%lu\n", as.size());
        for (int i = 0; i < as.size(); ++i) {
            printf("%d%c", as[i], i == as.size()-1 ? '\n' : ' ');
        }
    }
    return 0;
}