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Python program to check a number is a perfect number or not.

Algorithm:::



Step 1: Start
Step 2: Read a number, num
 Step 3: Assign i=1
Step 4: Assign sum=0
Step 5: Repeat steps 7,8&9 until i=num reaches
Step 7: If num%i==0 goto step 8
Step 8: Compute sum=sum+i
Step 9: Compute i=i+1
Step 10: If sum==num goto step 11 or else goto step 12
Step 11: Print num is a perfect number
Step 12: Print num is not a perfect number
Step 13: Stop



Flowchart:::


Program code:::

num=int(input('Enter a number '))
i=1
sum=0
while i<num:
    if num%i==0:
        sum=sum+i
    i=i+1
if sum==num:
    print num,'is a perfect number'
else:
    print num,'is not a perfect number'


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