Q: What are the factor combinations of the number 70,091?

 A:
Positive:   1 x 700917 x 1001317 x 412319 x 368931 x 2261119 x 589133 x 527217 x 323
Negative: -1 x -70091-7 x -10013-17 x -4123-19 x -3689-31 x -2261-119 x -589-133 x -527-217 x -323


How do I find the factor combinations of the number 70,091?

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 70,091, 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 70,091
-1 -70,091

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 70,091.

Example:
1 x 70,091 = 70,091
and
-1 x -70,091 = 70,091
Notice both answers equal 70,091

With that explanation out of the way, let's continue. Next, we take the number 70,091 and divide it by 2:

70,091 ÷ 2 = 35,045.5

If the quotient is a whole number, then 2 and 35,045.5 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 70,091
-1 -70,091

Now, we try dividing 70,091 by 3:

70,091 ÷ 3 = 23,363.6667

If the quotient is a whole number, then 3 and 23,363.6667 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 70,091
-1 -70,091

Let's try dividing by 4:

70,091 ÷ 4 = 17,522.75

If the quotient is a whole number, then 4 and 17,522.75 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 70,091
-1 70,091
Keep dividing by the next highest number until you cannot divide anymore.

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

171719311191332173235275892,2613,6894,12310,01370,091
-1-7-17-19-31-119-133-217-323-527-589-2,261-3,689-4,123-10,013-70,091

More Examples

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