#include<bits/stdc++.h>
using namespace std;
int n;
int main(){
cin>>n;
for(int i=1;i<=n;i++){
printf("%d:",i);
for(int j=1;j<=n;j++){
if(i%j==0){
printf("%d ",j);
}
}
printf("\n");
}
return 0;
}
/**************************************************************
Problem: 1519
User: xiaohongyi
Language: C++
Result: Accepted
Time:7 ms
Memory:2072 kb
****************************************************************/