+An **Arithmetic Function** is a function whose domain is the [Positive Integer](/wiki/positive_integer)s, often mapping to complex numbers. It serves as a fundamental tool in [Number Theory](/wiki/number_theory), revealing intrinsic properties of numbers through their divisors or prime factors.
+## See also
+- [Multiplicative Function](/wiki/multiplicative_function)
+- [Divisor Function](/wiki/divisor_function)
+- [Number Theory](/wiki/number_theory)
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