#include <cstdio>
#include <cstring>
#include <cstdlib> 
#include <algorithm>
 
using namespace std;

//namaega184


int main(){
	int n,k;scanf("%d%d",&n,&k);
	int isp[100001]={0,0,1};
	for(int i=3;i<=n;i++)if(i&1)isp[i]=1;else isp[i]=0;
	for(int i=3;i*i<=n;i+=2){
		if(isp[i]){
			for(int j=i*i;j<=n;j+=i)isp[j]=0;
		}
	}
	if(n%2==0){
		printf("%d\n",n/2);
		return 0;
	}
	else{
		int cnt=0;
		for(int i=3;i*i<=n;i+=2){
			if(!isp[i])continue;
			if(n%i==0){
				cnt=0;
				int nn=n;
				while(n!=1){nn/=n;cnt++;}
				int ans=i;
				cnt/=2;
				for(int i=1;i<cnt;i++)ans*=i;
				printf("%d\n",ans);
				return 0;
			}
		}
	}
	printf("%d\n",1);
 
	return 0;
}