#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n;
  cin >> n;
  vector<tuple<int, int, int>> ans;
  for(int x = 0; 3 * x * x <= n; x++) {
    for(int y = max(x, 1); (2 * x + y) * y <= n; y++) {
      int kz = n - x * y;
      if (kz % (x + y)) continue;
      int z = kz / (x + y);
      int a[3]{x, y, z};
      do {
        ans.emplace_back(a[0], a[1], a[2]);
      } while(next_permutation(all(a)));
    }
  }
  cout << ans.size() << '\n';
  for(auto [x, y, z] : ans) cout << x << ' ' << y << ' ' << z << '\n';
}