A:
Positive:
1 x 781144111 x 71013179 x 9887989 x 87769101 x 77341869 x 8989979 x 79791111 x 7031
Negative:
-1 x -7811441-11 x -710131-79 x -98879-89 x -87769-101 x -77341-869 x -8989-979 x -7979-1111 x -7031
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 7,811,441, 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 | 7,811,441 | |
| -1 | -7,811,441 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,811,441.
Example:
1 x 7,811,441 = 7,811,441
and
-1 x -7,811,441 = 7,811,441
Notice both answers equal 7,811,441
With that explanation out of the way, let's continue. Next, we take the number 7,811,441 and divide it by 2:
7,811,441 ÷ 2 = 3,905,720.5
If the quotient is a whole number, then 2 and 3,905,720.5 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 | 7,811,441 | |
| -1 | -7,811,441 |
Now, we try dividing 7,811,441 by 3:
7,811,441 ÷ 3 = 2,603,813.6667
If the quotient is a whole number, then 3 and 2,603,813.6667 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 | 7,811,441 | |
| -1 | -7,811,441 |
Let's try dividing by 4:
7,811,441 ÷ 4 = 1,952,860.25
If the quotient is a whole number, then 4 and 1,952,860.25 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 | 7,811,441 | |
| -1 | 7,811,441 |
If you did it right, you will end up with this table:
| 1 | 11 | 79 | 89 | 101 | 869 | 979 | 1,111 | 7,031 | 7,979 | 8,989 | 77,341 | 87,769 | 98,879 | 710,131 | 7,811,441 |
| -1 | -11 | -79 | -89 | -101 | -869 | -979 | -1,111 | -7,031 | -7,979 | -8,989 | -77,341 | -87,769 | -98,879 | -710,131 | -7,811,441 |
Here are some more numbers to try:
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