Q: What are the factor combinations of the number 87,829,626?

 A:
Positive:   1 x 878296262 x 439148133 x 292765426 x 1463827141 x 214218682 x 1071093123 x 714062246 x 357031
Negative: -1 x -87829626-2 x -43914813-3 x -29276542-6 x -14638271-41 x -2142186-82 x -1071093-123 x -714062-246 x -357031


How do I find the factor combinations of the number 87,829,626?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 87,829,626, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 87,829,626
-1 -87,829,626

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,829,626.

Example:
1 x 87,829,626 = 87,829,626
and
-1 x -87,829,626 = 87,829,626
Notice both answers equal 87,829,626

With that explanation out of the way, let's continue. Next, we take the number 87,829,626 and divide it by 2:

87,829,626 ÷ 2 = 43,914,813

If the quotient is a whole number, then 2 and 43,914,813 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

Here is what our table should look like at this step:

1 2 43,914,813 87,829,626
-1 -2 -43,914,813 -87,829,626

Now, we try dividing 87,829,626 by 3:

87,829,626 ÷ 3 = 29,276,542

If the quotient is a whole number, then 3 and 29,276,542 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

Here is what our table should look like at this step:

1 2 3 29,276,542 43,914,813 87,829,626
-1 -2 -3 -29,276,542 -43,914,813 -87,829,626

Let's try dividing by 4:

87,829,626 ÷ 4 = 21,957,406.5

If the quotient is a whole number, then 4 and 21,957,406.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 2 3 29,276,542 43,914,813 87,829,626
-1 -2 -3 -29,276,542 -43,914,813 87,829,626
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

12364182123246357,031714,0621,071,0932,142,18614,638,27129,276,54243,914,81387,829,626
-1-2-3-6-41-82-123-246-357,031-714,062-1,071,093-2,142,186-14,638,271-29,276,542-43,914,813-87,829,626

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