#include <cstdio>

using namespace std;

int f( int x )
{
    int ans = 0;
    while(x)
        ans += x % 10 , x/= 10;
    return ans;
}
int a[10000];
int m = 0;
int main()
{

    int T;
    scanf("%d",&T);
    while(T--)
    {
        int v;
        scanf("%d",&v);
        int s = f(v);
        m = 0;
        for( int i = 1; i <= s; i++ )
            if ( s % i == 0 && v % i == 0 )
            {
                a[++m] = i;
            }
        printf("%d\n",m );
        for(int i = 1; i <= m; i++) printf("%d%c",a[i],i==m?'\n':' ' );
    }
    return 0;

}