Perfect number is a positive integer which is equal to the sum of its proper positive divisors.
Proper divisors of 6 are 1, 2, 3.
Sum of its proper divisors = 1 + 2 + 3 = 6.
Hence 6 is a perfect number.
*** proper divisor means the remainder will be 0 when divided by that number.
Sample Input: n = 1000;
Sample Output: 6, 28, 496
def divisors(n): s = 1 for x in range(2,n): if(n%x == 0): s += x return s def isperfect(n): if(divisors(n) == n): return True else: return False #Testing def main(): n = int(input("n = ")) lst = [] for i in range(2,n+1): if(isperfect(i)): lst.append(i) print(str(lst)[1:-1]) main()
n = 1000 6, 28, 496
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