006

006

#include<iostream>
#include<cstdio>
#include<cmath>
using namespace std;

long  ans=0,leng=0;

long find(long n,long fec,long len ){//剩余被除数，因子，长度；
    if(n%fec==0){
        return find(n/fec,fec+1,len+1);
    }
    else 
		return len;
}
int main(){
    long n;
    cin>>n;
    for(long i=2;i<sqrt(n);i++){
        if(n%i==0){
            int ll=find(n/i,i+1,1);
            if(ll>leng){
                leng=ll;ans=i;
            }
        }
    }
    if(leng == 0){
        cout<<1<<endl;
        cout<<n<<endl;
        return 0;
    }
    cout<<leng<<endl;
    for(int i=0;i<leng-1;i++){
        printf("%ld*",ans+i);
    }
    printf("%ld\n",ans+leng-1);
    return 0;

}