#include <bits/stdc++.h>
using namespace std;

vector<array<int, 3>> ans, nans;
int n;

void check(int x, int y) {
	if ((n - x * y) % (x + y) != 0 || (n - x * y) / (x + y) < y) return;
	int z = (n - x * y) / (x + y);
	ans.push_back({ x, y, z });
}

int main() {
	ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
	cin >> n;
	for (int x = 0; x * x <= n; x ++) {
		for (int y = x; y * y <= n; y ++) if (y != 0) {
			check(x, y);
		}
	}
	for (auto [x, y, z] : ans) {
		vector<int> arr{ x, y, z };
		vector<int> p{ 1, 2, 3 };
		do {
			nans.push_back({ arr[p[0] - 1], arr[p[1] - 1], arr[p[2] - 1] });
		} while(next_permutation(p.begin(), p.end()));
	}
	sort(nans.begin(), nans.end());
	nans.erase(unique(nans.begin(), nans.end()), nans.end());
	cout << nans.size() << "\n";
	for (auto [x, y, z] : nans) cout << x << " " << y << " " << z << "\n";
	return 0;
}