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Q: Which two factors of 28 add up to 18?

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37

167

First of all, to know if a number is abundant, deficient, or perfect, you need to know all the factors of your given number. The factors of 28 are 1,2,4,7,14, and 28. Add your proper factors -or the factors except itself- and determine if the sum of the proper factors is below (deficient), above (abundant), or the exact same amount (perfect). In this case, if you add the proper factors, it equals exactly 28. Because it is exact, it is perfect! =)

The list of cubes are: 1,8,27 Which two numbers add up to 28? I think you can see which ones.

18 x =504

Related questions

-10 & -18

The common factors of 18 and 28 are 1 and 2

The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 28 are: 1, 2, 4, 7, 14, 28

-14 and -14 Add them together to get -28 Multiply them to get 196

18 and 10 18 x 10 = 180 18 + 10 = 28

47

The factors of 18 are: 1, 2, 3, 6, 9, 18.The factors of 28 are: 1, 2, 4, 7, 14, 28.The factors of 34 are: 1, 2, 17, 34.The common factors are: 1, 2

They are 7 and 2

2

2

The GCF of 18 and 28 is 2The factors of 18 are 1, 2, 3, 6, 9, and 18The factors of 28 are 1, 2, 4, 7, 14, and 28The GCF of 18 and 28 is 2

The factors of 18 are 1, 2, 3, 6, 9, and 18.The factors of 28 are 1, 2, 4, 7, 14, and 28.The factors of 34 are 1, 2, 17, and 34.The common factors of all three of those numbers are 1 and 2 .

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