A **weird number** is a specific type of integer in number theory that has a unique property regarding its divisors. Specifically, a weird number is defined as a positive integer that is abundant, meaning that the sum of its proper divisors (factors excluding the number itself) is greater than the number, but no subset of these divisors sums to the number itself.

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  1. Integer sequences
  2. Numbers
  3. Arithmetic
  4. Fields of mathematics
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