A **refactorable number** is a positive integer \( n \) such that \( n \) can be divided by the number of its divisors. In mathematical terms, if \( d(n) \) denotes the number of divisors of \( n \), then \( n \) is refactorable if \( n \) is divisible by \( d(n) \) (i.e., \( n \mod d(n) = 0 \)).

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