Q: What are the factor combinations of the number 85,616,032?

 A:
Positive:   1 x 856160322 x 428080164 x 214040088 x 1070200416 x 535100232 x 2675501113 x 757664226 x 378832452 x 189416904 x 947081808 x 473543616 x 23677
Negative: -1 x -85616032-2 x -42808016-4 x -21404008-8 x -10702004-16 x -5351002-32 x -2675501-113 x -757664-226 x -378832-452 x -189416-904 x -94708-1808 x -47354-3616 x -23677


How do I find the factor combinations of the number 85,616,032?

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 85,616,032, 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 85,616,032
-1 -85,616,032

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 85,616,032.

Example:
1 x 85,616,032 = 85,616,032
and
-1 x -85,616,032 = 85,616,032
Notice both answers equal 85,616,032

With that explanation out of the way, let's continue. Next, we take the number 85,616,032 and divide it by 2:

85,616,032 ÷ 2 = 42,808,016

If the quotient is a whole number, then 2 and 42,808,016 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 42,808,016 85,616,032
-1 -2 -42,808,016 -85,616,032

Now, we try dividing 85,616,032 by 3:

85,616,032 ÷ 3 = 28,538,677.3333

If the quotient is a whole number, then 3 and 28,538,677.3333 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 42,808,016 85,616,032
-1 -2 -42,808,016 -85,616,032

Let's try dividing by 4:

85,616,032 ÷ 4 = 21,404,008

If the quotient is a whole number, then 4 and 21,404,008 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 4 21,404,008 42,808,016 85,616,032
-1 -2 -4 -21,404,008 -42,808,016 85,616,032
Keep dividing by the next highest number until you cannot divide anymore.

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

124816321132264529041,8083,61623,67747,35494,708189,416378,832757,6642,675,5015,351,00210,702,00421,404,00842,808,01685,616,032
-1-2-4-8-16-32-113-226-452-904-1,808-3,616-23,677-47,354-94,708-189,416-378,832-757,664-2,675,501-5,351,002-10,702,004-21,404,008-42,808,016-85,616,032

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