Discover the Only Perfect Number Between 20 and 30

Learn about perfect numbers and find out which one lies between 20 and 30. Perfect number 28 explained!

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A perfect number is a number equal to the sum of its proper divisors, excluding itself. The only perfect number between 20 and 30 is 28. Its divisors (other than 28) are 1, 2, 4, 7, and 14, which add up to 28.

FAQs & Answers

  1. What is a perfect number? A perfect number is a positive integer that is equal to the sum of its proper divisors excluding itself.
  2. How is 28 a perfect number? 28 is a perfect number because its divisors (1, 2, 4, 7, 14) add up to 28.
  3. Are there any other perfect numbers between 20 and 30? No, 28 is the only perfect number in that range.
  4. What are the first few perfect numbers? The first few perfect numbers are 6, 28, and 496.

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