Q: What are the factor combinations of the number 907,945?

 A:
Positive:   1 x 9079455 x 18158941 x 2214543 x 21115103 x 8815205 x 4429215 x 4223515 x 1763
Negative: -1 x -907945-5 x -181589-41 x -22145-43 x -21115-103 x -8815-205 x -4429-215 x -4223-515 x -1763


How do I find the factor combinations of the number 907,945?

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 907,945, 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.

1 907,945
-1 -907,945

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 907,945.

Example:
1 x 907,945 = 907,945
and
-1 x -907,945 = 907,945
Notice both answers equal 907,945

With that explanation out of the way, let's continue. Next, we take the number 907,945 and divide it by 2:

907,945 ÷ 2 = 453,972.5

If the quotient is a whole number, then 2 and 453,972.5 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:

1 907,945
-1 -907,945

Now, we try dividing 907,945 by 3:

907,945 ÷ 3 = 302,648.3333

If the quotient is a whole number, then 3 and 302,648.3333 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:

1 907,945
-1 -907,945

Let's try dividing by 4:

907,945 ÷ 4 = 226,986.25

If the quotient is a whole number, then 4 and 226,986.25 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:

1 907,945
-1 907,945
Keep dividing by the next highest number until you cannot divide anymore.

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

1541431032052155151,7634,2234,4298,81521,11522,145181,589907,945
-1-5-41-43-103-205-215-515-1,763-4,223-4,429-8,815-21,115-22,145-181,589-907,945

More Examples

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