#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, k, i = 0, d = 2;
  cin >> n >> k;
  vector<int> v;
  while (i < k - 1 && n != 1) {
    if (n % d == 0) {
      n /= d;
      v.push_back(d);
      i++;
    } else {
      d++;
    }
  }
  if (n != 1) v.push_back(n);
  if (k != v.size())
    cout << "-1";
  else {
    for (int i = 0; i < k; i++) cout << v[i] << endl;
  }
}
