Using JavaScript to implement amicable numbers

Problem Description:

Let d (n) is defined as the sum of proper divisors of n (numbers less than n which divide into N).
If d (a) = B and d (b) = A, where a B, then A and B are a amicable pair and each of a and B are called amicable numbers.

For example, the proper divisors of the are 1, 2, 4, 5, A,,, and 110; therefore d (220) = 284. The proper divisors of 284 are 1, 2, 4, and 142; So d (284) = 220.

Evaluate the sum of all the amicable numbers under 10000.

Realize:

(function () {  
      
var factor = function (n) {  
var arr = new Array ();  
for (var i = 1;i < n; i++)  
{  
if (n%i = 0 && arr.indexof (i) = = 1)  
arr.push (i);  
}  
return arr;  
}  
      
var Sumarr = function (arr) {  
var sum = 0;  
      
for (var i = 0; i < arr.length i++)  
sum + = Arr[i];  
      
return sum;  
}  
      
      
for (var i = 2;i< 10000; i++)  
{  
var r1 = Sumarr (factor (i));  
var r2 = Sumarr (factor (R1));  
      
if (i = = R2 && i!= R1)  
console.log ("NUM1: + i +", num2: "+ R1);  
}"  
      
) ();

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