What two numbers have a GCF of 438?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 438.

There is actually an infinite number of answers to this question. First, note that both the numbers we are looking for must be multiples of 438. Below is the beginning list of multiples of 438 (1 through 7) in numerical order.

1. 438
2. 876
3. 1314
4. 1752
5. 2190
6. 2628
7. 3066
etc...

Two numbers that have a GCF of 438 can be 438 and any other number on the list above. Thus, two numbers that have a GCF of 438 are:

438 & 876
438 & 1314
438 & 1752
etc...

That is not all! Any combination of any multiple of 438 and "odd" multiples of 438 will also have GCF of 438. We numbered the multiples above so it would be easy to identify the "odd" multiples (number 1, 3, 5, 7, etc). Thus, here are some more examples of two numbers that also have a GCF of 438.

876 & 1314
876 & 2190
1752 & 2190
1752 & 3066
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 438. The lists we created can go on forever.

Two numbers have a GCF of Calculator
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Teacher Tip: If you are a teacher, you could ask these questions of your students: "I am thinking of two numbers and the GCF is 438, what are the numbers?" or "What are two numbers whose GCF is 438?"

What two numbers have a GCF of 439?
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