Python Program to Find Perfect Number

Python Program to Find Perfect Number

Python program to check if a number is a perfect number; Through this tutorial, you will learn how to check if a number is a perfect number in python using while loop, for loop and function. And print perfect numbers from 1 to N (100, 500, 1000) in python.

Python Program to Find Perfect Number

  • Python Program to find Perfect Number using For loop.
  • Python Program to find Perfect Number using While loop.
  • Python Program to find Perfect Number using Function.
  • Python Program to Find Perfect Number between 1 to 100 or N.

Python Program to find Perfect Number using For loop

  • Take input from the user.
  • Calculate whether the number is Perfect number or not using the Python For Loop.
  • Print the result.
# Python Program to find Perfect Number using For loop

# take input from user
Num = int(input("Please Enter any Number :- "))

Sum = 0

for i in range(1, Num):
    if(Num % i == 0):
        Sum = Sum + i
        
if (Sum == Num):
    print("It is a Perfect Number")
else:
    print("It is not a Perfect Number")

Output

Please Enter any Number :-  10
It is not a Perfect Number

// test other number
Please Enter any Number :-  6 
It is a Perfect Number 

Python Program to find Perfect Number using For While

  • Take input from the user.
  • Calculate whether the number is Perfect number or not using the Python While Loop.
  • Print the result.
# Python Program to find Perfect Number using While loop

# take input from user
Num = int(input("Please Enter any Number :- "))

i = 1
Sum = 0
while(i < Num):
    if(Num % i == 0):
        Sum = Sum + i
    i = i + 1
        
if (Sum == Num):
    print("It is a Perfect Number")
else:
    print("It is not a Perfect Number")

Output

Please Enter any Number :-  6
It is a Perfect Number

Python Program to find Perfect Number using Function

  • Take input from the user.
  • Calculate whether the number is Perfect number or not using function.
  • Print the result.
# Python Program to find Perfect Number using Functions

def PNum(Number):
    Sum = 0
    for i in range(1, Number):
        if(Number % i == 0):
            Sum = Sum + i
    return Sum  

# take input from user
Num = int(input("Please Enter any Number :- "))
        
if (Num == PNum(Num)):
    print("It is a Perfect Number")
else:
    print("It is not a Perfect Number")

Output

Please Enter any Number :-  5 
It is not a Perfect Number 

Python Program to Find Perfect Number between 1 to 100

  • Take inputs from the user.
  • Calculate whether the number is Perfect number or not using the Python For Loop.
  • Print the result.
# Python Program to find Perfect Number between 1 to 100

# Taking input from the user
Min = int(input("Please Enter any Minimum Value :- "))
Max = int(input("Please Enter any Maximum Value :- "))

# initialise sum

# Checking the Perfect Number
for Number in range(Min, Max - 1):
  
    Sum = 0
    
    for n in range(1, Number - 1):
        if(Number % n == 0):
            Sum = Sum + n     
            
    # display the result
    if(Sum == Number):
        print(" %d " %Number)

Output

Please Enter any Minimum Value :-  1
Please Enter any Maximum Value :-  100
 6 
 28 

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AuthorAdmin

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