 Unitary perfect number

A **unitary perfect number** is a special type of number that is defined in relation to its divisors. To understand unitary perfect numbers, we first need to define a few terms: 1. **Unitary Divisor:** A divisor \( d \) of a number \( n \) is called a unitary divisor if \( \gcd(d, n/d) = 1 \).