#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  int n;
  cin >> n;
  set<tuple<int, int, int>> s;
  for (int x = 0; x * x <= n; x++) {
    for (int y = x; x * y + y * y <= n; y++) {
      if (x + y == 0) continue;
      int z = (n - x * y) / (x + y);
      if (z >= 0 && x * y + y * z + z * x == n) {
        s.insert({ x, y, z });
        s.insert({ x, z, y });
        s.insert({ y, x, z });
        s.insert({ y, z, x });
        s.insert({ z, x, y });
        s.insert({ z, y, x });
      }
    }
  }
  cout << s.size() << endl;
  for (auto [x, y, z] : s) {
    cout << x << " " << y << " " << z << endl;
  }
  return 0;
}