A divisor of a number is a proper divisor if it is not equal to the number. What is the sum of the proper divisors of $432$?
Question:
A divisor of a number is a proper divisor if it is not equal to the number. What is the sum of the proper divisors of $432$?
Answer:
Let's think step by step.

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A divisor of a number is a proper divisor if it is not equal to the number. What is the sum of the proper divisors of $432$?
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