A:
Positive:
1 x 787254717 x 46309147 x 16750159 x 133433167 x 47141799 x 98531003 x 78492773 x 2839
Negative:
-1 x -7872547-17 x -463091-47 x -167501-59 x -133433-167 x -47141-799 x -9853-1003 x -7849-2773 x -2839
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 7,872,547, 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 | 7,872,547 | |
| -1 | -7,872,547 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,872,547.
Example:
1 x 7,872,547 = 7,872,547
and
-1 x -7,872,547 = 7,872,547
Notice both answers equal 7,872,547
With that explanation out of the way, let's continue. Next, we take the number 7,872,547 and divide it by 2:
7,872,547 ÷ 2 = 3,936,273.5
If the quotient is a whole number, then 2 and 3,936,273.5 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 | 7,872,547 | |
| -1 | -7,872,547 |
Now, we try dividing 7,872,547 by 3:
7,872,547 ÷ 3 = 2,624,182.3333
If the quotient is a whole number, then 3 and 2,624,182.3333 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 | 7,872,547 | |
| -1 | -7,872,547 |
Let's try dividing by 4:
7,872,547 ÷ 4 = 1,968,136.75
If the quotient is a whole number, then 4 and 1,968,136.75 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 | 7,872,547 | |
| -1 | 7,872,547 |
If you did it right, you will end up with this table:
| 1 | 17 | 47 | 59 | 167 | 799 | 1,003 | 2,773 | 2,839 | 7,849 | 9,853 | 47,141 | 133,433 | 167,501 | 463,091 | 7,872,547 |
| -1 | -17 | -47 | -59 | -167 | -799 | -1,003 | -2,773 | -2,839 | -7,849 | -9,853 | -47,141 | -133,433 | -167,501 | -463,091 | -7,872,547 |
Here are some more numbers to try:
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