#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001

int main(){
	
	long long N;
	cin>>N;
	
	long long ans = 0;
	vector<vector<int>> A;
	for(long long i=0;i<=N;i++){
		for(long long j=0;j<=N;j++){
			if(i==0&&j==0)continue;
			if(i*j>N)break;
			long long n = N - i * j;
			if(n%(i+j)==0){
				A.push_back({n/(i+j),i,j});
			}
		}
	}
	
	cout<<A.size()<<endl;
	rep(i,A.size()){
		cout<<A[i][0]<<' '<<A[i][1]<<' '<<A[i][2]<<endl;
	}
	
	return 0;
}