/* -*- coding: utf-8 -*-
 *
 * 2358.cc:  No.2358 xy+yz+zx=N - yukicoder
 */

#include<cstdio>
#include<vector>
#include<set>
#include<algorithm>
 
using namespace std;

/* constant */

/* typedef */

typedef vector<int> vi;
typedef set<vi> svi;

/* global variables */

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);

  svi as;
  for (int x = 0; x * x * 3 <= n; x++) {
    int m = n + x * x;
    for (int p = max(1, x); p * p <= m; p++)
      if (m % p == 0) {
	int q = m / p;
	int y = p - x, z  = q - x;
	if (x <= y && y <= z) {
	  as.insert({x, y, z});
	  as.insert({x, z, y});
	  as.insert({y, x, z});
	  as.insert({y, z, x});
	  as.insert({z, x, y});
	  as.insert({z, y, x});
	}
      }
  }

  printf("%d\n", (int)as.size());
  for (auto &v: as)
    printf("%d %d %d\n", v[0], v[1], v[2]);

  return 0;
}