+The **Divisor Function** ($\sigma_k(n)$ or $d(n)$) unveils the intricate structure of an [Integer](/wiki/integer) $n$, counting or summing powers of its divisors. It is a fundamental concept within [Number Theory](/wiki/number_theory), offering profound insights into a number's multiplicative properties.
+## See also
+- [Prime Number](/wiki/prime_number)
+- [Perfect Number](/wiki/perfect_number)
+- [Arithmetic Function](/wiki/arithmetic_function)
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