What two numbers have a GCF of 1638?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 1638.

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 1638. Below is the beginning list of multiples of 1638 (1 through 7) in numerical order.

1. 1638
2. 3276
3. 4914
4. 6552
5. 8190
6. 9828
7. 11466
etc...

Two numbers that have a GCF of 1638 can be 1638 and any other number on the list above. Thus, two numbers that have a GCF of 1638 are:

1638 & 3276
1638 & 4914
1638 & 6552
etc...

That is not all! Any combination of any multiple of 1638 and "odd" multiples of 1638 will also have GCF of 1638. 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 1638.

3276 & 4914
3276 & 8190
6552 & 8190
6552 & 11466
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 1638. 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 1638, what are the numbers?" or "What are two numbers whose GCF is 1638?"

What two numbers have a GCF of 1639?
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