Factors of 40 that add up to 19

We take "Factors of 40 that add up to 19" to mean "What combination(s) of two factors of 40 when added together will equal 19?"

We find the solution by first listing all the factors of 40 and then we find all the different combinations of two factors of 40 that when added together equal 19.

The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40.

After trying all the different ways of adding the factors above together, we did not find any combinations of two factors of 40 that add up to 19.

However, one could argue that factors of 40 should include the negative counterparts to the positive factors above since minus times minus equals plus.

If we include the negative factors, we find the following combination(s) of two factors of 40 that add up to 19 to be as follows:

20 + (-1) = 19

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