What two numbers have a GCF of 561?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 561.

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 561. Below is the beginning list of multiples of 561 (1 through 7) in numerical order.

1. 561
2. 1122
3. 1683
4. 2244
5. 2805
6. 3366
7. 3927
etc...

Two numbers that have a GCF of 561 can be 561 and any other number on the list above. Thus, two numbers that have a GCF of 561 are:

561 & 1122
561 & 1683
561 & 2244
etc...

That is not all! Any combination of any multiple of 561 and "odd" multiples of 561 will also have GCF of 561. 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 561.

1122 & 1683
1122 & 2805
2244 & 2805
2244 & 3927
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 561. The lists we created can go on forever.

Two numbers have a GCF of Calculator
Need the answer to a similar problem? Enter your GCF below to find the two numbers with that GCF.

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 561, what are the numbers?" or "What are two numbers whose GCF is 561?"

What two numbers have a GCF of 562?
Need more knowledge? Go here for the next question we explained and solved.