A:
Positive:
1 x 188456877 x 269224153 x 35557979 x 238553371 x 50797553 x 34079643 x 293094187 x 4501
Negative:
-1 x -18845687-7 x -2692241-53 x -355579-79 x -238553-371 x -50797-553 x -34079-643 x -29309-4187 x -4501
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 18,845,687, 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 | 18,845,687 | |
| -1 | -18,845,687 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,845,687.
Example:
1 x 18,845,687 = 18,845,687
and
-1 x -18,845,687 = 18,845,687
Notice both answers equal 18,845,687
With that explanation out of the way, let's continue. Next, we take the number 18,845,687 and divide it by 2:
18,845,687 ÷ 2 = 9,422,843.5
If the quotient is a whole number, then 2 and 9,422,843.5 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 | 18,845,687 | |
| -1 | -18,845,687 |
Now, we try dividing 18,845,687 by 3:
18,845,687 ÷ 3 = 6,281,895.6667
If the quotient is a whole number, then 3 and 6,281,895.6667 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 | 18,845,687 | |
| -1 | -18,845,687 |
Let's try dividing by 4:
18,845,687 ÷ 4 = 4,711,421.75
If the quotient is a whole number, then 4 and 4,711,421.75 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 | 18,845,687 | |
| -1 | 18,845,687 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 79 | 371 | 553 | 643 | 4,187 | 4,501 | 29,309 | 34,079 | 50,797 | 238,553 | 355,579 | 2,692,241 | 18,845,687 |
| -1 | -7 | -53 | -79 | -371 | -553 | -643 | -4,187 | -4,501 | -29,309 | -34,079 | -50,797 | -238,553 | -355,579 | -2,692,241 | -18,845,687 |
Here are some more numbers to try:
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