Deficient Number Checker

σ(n) < 2n?

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About Deficient Number Checker

A deficient number checker testing if σ(n)−n < n. All primes are deficient (only divisor 1). All prime powers are deficient. Shows deficiency 2n−σ(n), divisor list, and classification. The majority (~75%) of natural numbers are deficient. Client-side.

Deficient Number Checker Features

  • Deficiency test
  • Divisor sum
  • Classification
  • Divisor list
  • Deficiency value

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