A:
Positive:
1 x 1812385311 x 164762317 x 106610919 x 953887187 x 96919209 x 86717323 x 561113553 x 5101
Negative:
-1 x -18123853-11 x -1647623-17 x -1066109-19 x -953887-187 x -96919-209 x -86717-323 x -56111-3553 x -5101
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 18,123,853, 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 | 18,123,853 | |
| -1 | -18,123,853 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,123,853.
Example:
1 x 18,123,853 = 18,123,853
and
-1 x -18,123,853 = 18,123,853
Notice both answers equal 18,123,853
With that explanation out of the way, let's continue. Next, we take the number 18,123,853 and divide it by 2:
18,123,853 ÷ 2 = 9,061,926.5
If the quotient is a whole number, then 2 and 9,061,926.5 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 | 18,123,853 | |
| -1 | -18,123,853 |
Now, we try dividing 18,123,853 by 3:
18,123,853 ÷ 3 = 6,041,284.3333
If the quotient is a whole number, then 3 and 6,041,284.3333 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 | 18,123,853 | |
| -1 | -18,123,853 |
Let's try dividing by 4:
18,123,853 ÷ 4 = 4,530,963.25
If the quotient is a whole number, then 4 and 4,530,963.25 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 | 18,123,853 | |
| -1 | 18,123,853 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 19 | 187 | 209 | 323 | 3,553 | 5,101 | 56,111 | 86,717 | 96,919 | 953,887 | 1,066,109 | 1,647,623 | 18,123,853 |
| -1 | -11 | -17 | -19 | -187 | -209 | -323 | -3,553 | -5,101 | -56,111 | -86,717 | -96,919 | -953,887 | -1,066,109 | -1,647,623 | -18,123,853 |
Here are some more numbers to try:
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