因子数问题

#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<algorithm>
using namespace std;
const int Max = ( 1 << 20 ) + 5;
long long len[Max],hash[Max];
int n;
void pre(  )
{
     for( int i = 1; i <= Max / 2; ++i )
     {
          for( int j = i + i; j < Max; j += i )
          {
               if( len[i] + 1 > len[j] )
               {
                   len[j] = len[i] + 1;
 
                   if( hash[i] == 0 )
                       hash[j] = 1;
                   else
                       hash[j] = hash[i];//if( j == 100 )
                      //  printf( " len = %I64d  %d   hash = %I64dn",len[j],i,hash[j] );
               }
               else if( len[i] + 1 == len[j] )
               {
                    hash[j] += hash[i];
               }
           }//printf( "*" );
      }
 }
int main(  )
{
    //freopen( "1.in","r",stdin );
    //freopen( "1.out","w",stdout );
    pre(  );
    while( scanf( "%d",&n )  == 1 )
           printf( "%I64d %I64dn",len[n],hash[n] );
    //system( "pause" );
    return 0;
}