Q: What are the factor combinations of the number 687,071,239?
A:
Positive:
1 x 68707123947 x 14618537
Negative:
-1 x -687071239-47 x -14618537
A:
Positive:
1 x 68707123947 x 14618537
Negative:
-1 x -687071239-47 x -14618537
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 687,071,239, it is easier to work with a table - it's called factoring from the outside in.
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 | 687,071,239 | |
-1 | -687,071,239 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 687,071,239.
Example:
1 x 687,071,239 = 687,071,239
and
-1 x -687,071,239 = 687,071,239
Notice both answers equal 687,071,239
With that explanation out of the way, let's continue. Next, we take the number 687,071,239 and divide it by 2:
687,071,239 ÷ 2 = 343,535,619.5
If the quotient is a whole number, then 2 and 343,535,619.5 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 | 687,071,239 | |
-1 | -687,071,239 |
Now, we try dividing 687,071,239 by 3:
687,071,239 ÷ 3 = 229,023,746.3333
If the quotient is a whole number, then 3 and 229,023,746.3333 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 | 687,071,239 | |
-1 | -687,071,239 |
Let's try dividing by 4:
687,071,239 ÷ 4 = 171,767,809.75
If the quotient is a whole number, then 4 and 171,767,809.75 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 | 687,071,239 | |
-1 | 687,071,239 |
If you did it right, you will end up with this table:
1 | 47 | 14,618,537 | 687,071,239 |
-1 | -47 | -14,618,537 | -687,071,239 |
Here are some more numbers to try:
Try the factor calculator