A:
Positive:
1 x 129363855 x 25872777 x 184805511 x 117603535 x 36961155 x 23520777 x 168005385 x 33601
Negative:
-1 x -12936385-5 x -2587277-7 x -1848055-11 x -1176035-35 x -369611-55 x -235207-77 x -168005-385 x -33601
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 12,936,385, 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 | 12,936,385 | |
| -1 | -12,936,385 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,936,385.
Example:
1 x 12,936,385 = 12,936,385
and
-1 x -12,936,385 = 12,936,385
Notice both answers equal 12,936,385
With that explanation out of the way, let's continue. Next, we take the number 12,936,385 and divide it by 2:
12,936,385 ÷ 2 = 6,468,192.5
If the quotient is a whole number, then 2 and 6,468,192.5 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 | 12,936,385 | |
| -1 | -12,936,385 |
Now, we try dividing 12,936,385 by 3:
12,936,385 ÷ 3 = 4,312,128.3333
If the quotient is a whole number, then 3 and 4,312,128.3333 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 | 12,936,385 | |
| -1 | -12,936,385 |
Let's try dividing by 4:
12,936,385 ÷ 4 = 3,234,096.25
If the quotient is a whole number, then 4 and 3,234,096.25 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 | 12,936,385 | |
| -1 | 12,936,385 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 33,601 | 168,005 | 235,207 | 369,611 | 1,176,035 | 1,848,055 | 2,587,277 | 12,936,385 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -33,601 | -168,005 | -235,207 | -369,611 | -1,176,035 | -1,848,055 | -2,587,277 | -12,936,385 |
Here are some more numbers to try:
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