import java.io.*;
    import java.util.*;
    import java.text.*;
    import java.math.*;
    import java.util.regex.*;
     
    class Solution {
     
       
     public static void main(String[] args) {
            Scanner scan = new Scanner(System.in);
			   int n=scan.nextInt();
		       long [] ar =new long [n];
      for(int j=0;j<n;j++){
		  ar[j]=scan.nextInt();
	  }		
	  long z=0;
      for(int i=0;i<n;i++){
		  for(long i1=1;i1<=ar[i];i1++){
			  
			  long u =ar[i]/i1;
			  if(ar[i]%i1==0){
				  z=z+u;
				  i1=i1*2-1;
				  
				  
			  }
			  
			  
			  
			  
			  
			  
		  }
	  }
	  System.out.println(z);
	  
	   }
         }