Q: What are the factor combinations of the number 1,987,956?

 A:
Positive:   1 x 19879562 x 9939783 x 6626524 x 4969896 x 3313269 x 22088412 x 16566318 x 11044227 x 7362836 x 5522154 x 3681479 x 25164108 x 18407158 x 12582233 x 8532237 x 8388316 x 6291466 x 4266474 x 4194699 x 2844711 x 2796932 x 2133948 x 20971398 x 1422
Negative: -1 x -1987956-2 x -993978-3 x -662652-4 x -496989-6 x -331326-9 x -220884-12 x -165663-18 x -110442-27 x -73628-36 x -55221-54 x -36814-79 x -25164-108 x -18407-158 x -12582-233 x -8532-237 x -8388-316 x -6291-466 x -4266-474 x -4194-699 x -2844-711 x -2796-932 x -2133-948 x -2097-1398 x -1422


How do I find the factor combinations of the number 1,987,956?

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 1,987,956, 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 1,987,956
-1 -1,987,956

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 1,987,956.

Example:
1 x 1,987,956 = 1,987,956
and
-1 x -1,987,956 = 1,987,956
Notice both answers equal 1,987,956

With that explanation out of the way, let's continue. Next, we take the number 1,987,956 and divide it by 2:

1,987,956 ÷ 2 = 993,978

If the quotient is a whole number, then 2 and 993,978 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 2 993,978 1,987,956
-1 -2 -993,978 -1,987,956

Now, we try dividing 1,987,956 by 3:

1,987,956 ÷ 3 = 662,652

If the quotient is a whole number, then 3 and 662,652 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 3 662,652 993,978 1,987,956
-1 -2 -3 -662,652 -993,978 -1,987,956

Let's try dividing by 4:

1,987,956 ÷ 4 = 496,989

If the quotient is a whole number, then 4 and 496,989 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 4 496,989 662,652 993,978 1,987,956
-1 -2 -3 -4 -496,989 -662,652 -993,978 1,987,956
Keep dividing by the next highest number until you cannot divide anymore.

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

1234691218273654791081582332373164664746997119329481,3981,4222,0972,1332,7962,8444,1944,2666,2918,3888,53212,58218,40725,16436,81455,22173,628110,442165,663220,884331,326496,989662,652993,9781,987,956
-1-2-3-4-6-9-12-18-27-36-54-79-108-158-233-237-316-466-474-699-711-932-948-1,398-1,422-2,097-2,133-2,796-2,844-4,194-4,266-6,291-8,388-8,532-12,582-18,407-25,164-36,814-55,221-73,628-110,442-165,663-220,884-331,326-496,989-662,652-993,978-1,987,956

More Examples

Here are some more numbers to try:

1,987,9541,987,9551,987,9571,987,958
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