Q:

# What is the sum of all the positive integer factors of 12?

A:

The sum of all the positive integer factors of 12 is 28. The positive integer factors of 12 are 1, 2, 3, 4, 6 and 12, and when added together, these terms are equal to 28.

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The factors of a number are the terms that can be multiplied to equal the number. The factors of 10, for example, include 2 and 5, because 2 x 5 = 10. An integer is a whole number, so a positive integer factor of a number is a positive whole number factor. The whole numbers that can be multiplied to equal 12 are 1 x 12, 2 x 6, and 3 x 4. To find the sum, calculate 1 + 2 + 3 + 4 + 6 +12 = 28.

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