#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, n) for (int i = 1; i <= (int)(n); i++)
#define ll long long
int in() {int x; cin>>x; return x;}
ll lin() {ll x; cin>>x; return x;}
string sin() {string x;cin>>x;return x;}
using graph = vector<vector<int>>;
using graph2 = vector<vector<pair<int, int>>>;

bool ifprime(int x){
    if(x==1)return false;
    if(x==2)return true;
    if(x%2==0)return false;
    for(int i=2;i*i<=x;i++){if(x%i==0)return false;}
    return true;
}
ll mod(ll x, ll y){if(x>=0||x%y==0) return x%y;return y+x%y;} //mod including minus
ll dv0(ll x, ll y){if(x>=0||x%y==0)return x/y;return x/y-1;} //rnd down
ll dv1(ll x, ll y){if(x%y==0) return dv0(x,y);return dv0(x,y)+1;} //rnd up

//Start from Here
int main(){
    int K=in();
    ll sum=0;
    int m;
    rep2(i, K){
        rep2(j, K){
            rep2(k, K){
                m=gcd(i, j);
                sum+=gcd(m, k);
            }
        }
    }
}