🐍Python Program #24: Check If a Number is Perfect | Python Programming
🐍Python Program #24: Check If a Number is Perfect | Python Programming
💡 What is a Perfect Number? It’s a number that equals the sum of its proper divisors.
Example: 28 → 1 + 2 + 4 + 7 + 14 = 28 ✔
In this tutorial, you’ll learn:
✅ How to find divisors of a number
✅ How to check if a number is perfect
✅ A common math-based Python program for practice
Perfect for coding practice, assignments, and interviews!
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Logic:
1. A Perfect Number is a number that is equal to the sum of its proper divisors (excluding itself).
Example: 28 → divisors = 1, 2, 4, 7, 14
Sum = 1 + 2 + 4 + 7 + 14 = 28 ✔
2. Ask the user to enter a number.
3. Find divisors:
→ Loop from 1 to num-1 (or num//2 for efficiency).
→ If num % i == 0 → add i to sum.
4. Compare the sum with the original number:
→ If equal → Perfect number.
→ Else → Not perfect.
Code:
num = 28
sum_of_divisors = 0
for i in range(1, num):
if num % i == 0:
sum_of_divisors += i
if sum_of_divisors == num:
print(f"{num} is a Perfect number")
else:
print(f"{num} is NOT a Perfect number")
👉 Perfect for Python beginners and school/college projects!
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