A:
Positive:
1 x 1827382711 x 166125713 x 140567917 x 1074931143 x 127789187 x 97721221 x 826872431 x 7517
Negative:
-1 x -18273827-11 x -1661257-13 x -1405679-17 x -1074931-143 x -127789-187 x -97721-221 x -82687-2431 x -7517
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 18,273,827, 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 | 18,273,827 | |
| -1 | -18,273,827 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,273,827.
Example:
1 x 18,273,827 = 18,273,827
and
-1 x -18,273,827 = 18,273,827
Notice both answers equal 18,273,827
With that explanation out of the way, let's continue. Next, we take the number 18,273,827 and divide it by 2:
18,273,827 ÷ 2 = 9,136,913.5
If the quotient is a whole number, then 2 and 9,136,913.5 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 | 18,273,827 | |
| -1 | -18,273,827 |
Now, we try dividing 18,273,827 by 3:
18,273,827 ÷ 3 = 6,091,275.6667
If the quotient is a whole number, then 3 and 6,091,275.6667 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 | 18,273,827 | |
| -1 | -18,273,827 |
Let's try dividing by 4:
18,273,827 ÷ 4 = 4,568,456.75
If the quotient is a whole number, then 4 and 4,568,456.75 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 | 18,273,827 | |
| -1 | 18,273,827 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 17 | 143 | 187 | 221 | 2,431 | 7,517 | 82,687 | 97,721 | 127,789 | 1,074,931 | 1,405,679 | 1,661,257 | 18,273,827 |
| -1 | -11 | -13 | -17 | -143 | -187 | -221 | -2,431 | -7,517 | -82,687 | -97,721 | -127,789 | -1,074,931 | -1,405,679 | -1,661,257 | -18,273,827 |
Here are some more numbers to try:
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