Q: What are the factor combinations of the number 671,876?

 A:
Positive:   1 x 6718762 x 3359384 x 16796923 x 2921246 x 1460667 x 1002892 x 7303109 x 6164134 x 5014218 x 3082268 x 2507436 x 1541
Negative: -1 x -671876-2 x -335938-4 x -167969-23 x -29212-46 x -14606-67 x -10028-92 x -7303-109 x -6164-134 x -5014-218 x -3082-268 x -2507-436 x -1541


How do I find the factor combinations of the number 671,876?

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 671,876, 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.

1 671,876
-1 -671,876

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 671,876.

Example:
1 x 671,876 = 671,876
and
-1 x -671,876 = 671,876
Notice both answers equal 671,876

With that explanation out of the way, let's continue. Next, we take the number 671,876 and divide it by 2:

671,876 ÷ 2 = 335,938

If the quotient is a whole number, then 2 and 335,938 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 2 335,938 671,876
-1 -2 -335,938 -671,876

Now, we try dividing 671,876 by 3:

671,876 ÷ 3 = 223,958.6667

If the quotient is a whole number, then 3 and 223,958.6667 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 2 335,938 671,876
-1 -2 -335,938 -671,876

Let's try dividing by 4:

671,876 ÷ 4 = 167,969

If the quotient is a whole number, then 4 and 167,969 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 4 167,969 335,938 671,876
-1 -2 -4 -167,969 -335,938 671,876
Keep dividing by the next highest number until you cannot divide anymore.

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

124234667921091342182684361,5412,5073,0825,0146,1647,30310,02814,60629,212167,969335,938671,876
-1-2-4-23-46-67-92-109-134-218-268-436-1,541-2,507-3,082-5,014-6,164-7,303-10,028-14,606-29,212-167,969-335,938-671,876

More Examples

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