import math 
def sumofFactors(n) : 
    if (n % 2 != 0) : 
        return 0
    res = 1
    for i in range(2, (int)(math.sqrt(n)) + 1) :    
        count = 0
        curr_sum = 1
        curr_term = 1
        while (n % i == 0) : 
            count= count + 1
            n = n // i 
            if (i == 2 and count == 1) : 
                curr_sum = 0
            curr_term = curr_term * i 
            curr_sum = curr_sum + curr_term 
        res = res * curr_sum  
    if (n >= 2) : 
        res = res * (1 + n) 
    return res