What term is used to describe a number with the property that the sum of all factors of the number including 1 and the number itself is equal to twice the number?


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Answer:

Perfect Number

Step by Step Explanation:
  1. By definition, a number is a perfect number if the sum of all factors of the number including 1 and the number itself is equal to twice the number.
  2. Let us illustrate this through an example:
    1 x 6 = 6
    2 x 3 = 6
    3 x 2 = 6
    6 x 1 = 6
  3. Here, the factors of 6 include 1, 2, 3, and 6.
  4. We have 1 + 2 + 3 + 6 = 12, and 2 x 6 = 12. Therefore 6 is a perfect number.

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