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

int main(){
  using ll=long long;
  using lll=__int128_t;
  ll m=1e6+10;
  ll n;
  cin>>n;
  vector<lll> p3(m);
  for (ll i=0;i<m;i++) p3[i]=i*i*i;
  map<lll,vector<ll>> mp;
  for (int i=1;i<m;i++){
    p3[i]+=p3[i-1];
    mp[p3[i]].push_back(i);
  }
  vector<pair<ll,ll>> ans;
  for (int i=0;i<m;i++){
    for (ll j:mp[n+p3[i]]){
      ans.push_back({i+1,j});
    }
  }
  int k=ans.size();
  cout<<k<<endl;
  for (int i=0;i<k;i++) cout<<ans[i].first<<" "<<ans[i].second<<endl;
}