#include <set>
#include <map>
#include <vector>
#include <cstdio>
#include <climits>
#include <cstring>
#include <iostream>
#include <algorithm>
using namespace std;

#define Int register int

void read (int &x)
{
    x = 0;char c = getchar();int f = 1;
    while (c < '0' || c > '9'){if (c == '-') f = -f;c = getchar();}
    while (c >= '0' && c <= '9'){x = (x << 3) + (x << 1) + c - '0';c = getchar();}
    x *= f;return ;
}

void write (int x)
{
    if (x < 0){x = -x;putchar ('-');}
    if (x > 9) write (x / 10);
    putchar (x % 10 + '0');
}

int Sum (int x)
{
    int tot = 0;
    while (x)
    {
        tot += x % 10;
        x /= 10;
    }
    return tot;
}

void Work (int x)
{
    vector <int> ans;
    int tot = Sum (x);
    for (Int i = 1;i <= tot;++ i)
        if (x % i == 0)
            if (tot % i == 0) ans.push_back(i);
    write (ans.size()),putchar ('\n');
    if (!ans.size()) return ;
    write (ans[0]);
    for (Int i = 1;i < ans.size();++ i)
        putchar (' '),write (ans[i]);
    putchar ('\n');
    return ;
}

signed main()
{
    int times;
    read (times);
    while (times --)
    {
        int x;
        read (x);
        Work (x);
    }
    return 0; 
}