#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0; i<(n); i++)
#define rep1(i,n) for(int i=1; i<=(n); i++)
#define sz(x) int(x.size())
#define all(x) (x).begin(),(x).end()
#define Q2 1000000007
#define Q 998244353
#define lINF LONG_LONG_MAX  //ll
#define iINF INT_MAX //int
#define yes "Yes"
#define no "No"
#define kotae cout<<ans<<endl;
#define dame { puts("0"); return 0;}
#define yn {puts("Yes");}else{puts("No");}
using ll=long long;
using ull=unsigned long long;
using P=pair<int,int>;
using pqg=priority_queue<int,vector<int>,greater<int>>;
using vi=vector<int>;
using vi2=vector<vector<int>>;
using vi3=vector<vector<vector<int>>>;
using vl=vector<ll>;
using vl2=vector<vector<ll>>;
using vl3=vector<vector<vector<ll>>>;
using vs=vector<string>;
using vp=vector<P>;
using vp2=vector<vector<P>>;
void chmax(int &x, int y){ x=max(x,y); return; }
void chmin(int &x, int y){ x=min(x,y); return; }
void chmaxl(ll &x, ll y){ x=max(x,y); return; }
void chminl(ll &x, ll y){ x=min(x,y); return; }

struct Prime{
  vi ps;
  set<ll> st;
  vector<bool> p;
  vector<int> devisor;
  Prime(int n){
    p.resize(n+1,true);
    devisor.resize(n+1);
    for(int i=2;i<=n;i++){
      if(!p[i]) continue;
      ps.push_back(i);
      st.insert(i);
      for(int j=i;j<=n;j+=i) {
        p[j]=false;
        devisor[j]=i;
      }
    }
  }
  bool isPrime(int n){
    if(st.count(n)) return true;
    else return false;
  }
};

int main() {  

  int p[]={2,3,5,7,11,13,17,19,23,29,31};
  int n;
  cin >> n;
  int ans=0;
  int s=1<<11;
  vi dp(s);
  for(int i=32;i<=n;i++){
    bool ok=true;
    rep(j,11) if(i%p[j]==0) ok=false;
    //if(ok) dp[0]+=i;
  }
  rep(i,s){
    for(int j=2;j<=n;j++){
      bool ok=true;
      rep(k,11) if((i>>k)&1 && j%p[k]==0) ok=false;
      if(ok) {
        int a=0;
        rep(k,11) if(j%p[k]==0) a+=(1<<k);
        chmax(dp[i+a],dp[i]+j);
        chmax(ans,dp[i+a]);
      }
    }
  }

  kotae;

  return 0;
}