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

#define all(v) v.begin(),v.end()
using ll = long long;
using ull = unsigned long long;
using vll=vector<ll>;
using vvll = vector<vector<ll>>;
using P = pair<ll,ll>;
using vp=vector<pair<ll, ll>>;

const ll INF=1ll<<60;
ll mod10=1e9+7;
ll mod99=998244353;
const double PI = acos(-1);

#define rep(i,n) for (ll i=0;i<n;++i)
#define per(i,n) for(int i=n-1;i>=0;--i)
#define rep2(i,a,n) for (ll i=a;i<n;++i)
#define per2(i,a,n) for (ll i=a;i>=n;--i)

int main(){
    ll N;
    cin>>N;
    set<tuple<ll,ll,ll>> st;
    rep2(i,0,N+1){
        if(i*i>N)break;
        rep2(j,1,N+1){
            if(j*j>N)break;
            if((N-i*j)%(i+j)==0){
                ll z=(N-i*j)/(i+j);
                st.emplace(i,j,z);
                st.emplace(i,z,j);
                st.emplace(j,i,z);
                st.emplace(j,z,i);
                st.emplace(z,i,j);
                st.emplace(z,j,i);
                
            }
        }
    }
    cout << st.size() << endl;
    for(auto [x,y,z]:st) cout<<x<<" "<<y<<" "<<z<<endl;
}