Q: What are the factor combinations of the number 49,170?

 A:
Positive:   1 x 491702 x 245853 x 163905 x 98346 x 819510 x 491711 x 447015 x 327822 x 223530 x 163933 x 149055 x 89466 x 745110 x 447149 x 330165 x 298
Negative: -1 x -49170-2 x -24585-3 x -16390-5 x -9834-6 x -8195-10 x -4917-11 x -4470-15 x -3278-22 x -2235-30 x -1639-33 x -1490-55 x -894-66 x -745-110 x -447-149 x -330-165 x -298


How do I find the factor combinations of the number 49,170?

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 49,170, 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 49,170
-1 -49,170

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 49,170.

Example:
1 x 49,170 = 49,170
and
-1 x -49,170 = 49,170
Notice both answers equal 49,170

With that explanation out of the way, let's continue. Next, we take the number 49,170 and divide it by 2:

49,170 ÷ 2 = 24,585

If the quotient is a whole number, then 2 and 24,585 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 24,585 49,170
-1 -2 -24,585 -49,170

Now, we try dividing 49,170 by 3:

49,170 ÷ 3 = 16,390

If the quotient is a whole number, then 3 and 16,390 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 16,390 24,585 49,170
-1 -2 -3 -16,390 -24,585 -49,170

Let's try dividing by 4:

49,170 ÷ 4 = 12,292.5

If the quotient is a whole number, then 4 and 12,292.5 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 16,390 24,585 49,170
-1 -2 -3 -16,390 -24,585 49,170
Keep dividing by the next highest number until you cannot divide anymore.

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

1235610111522303355661101491652983304477458941,4901,6392,2353,2784,4704,9178,1959,83416,39024,58549,170
-1-2-3-5-6-10-11-15-22-30-33-55-66-110-149-165-298-330-447-745-894-1,490-1,639-2,235-3,278-4,470-4,917-8,195-9,834-16,390-24,585-49,170

More Examples

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