A:
Positive:
1 x 126478455 x 25295697 x 180683531 x 40799535 x 361367155 x 81599217 x 582851085 x 11657
Negative:
-1 x -12647845-5 x -2529569-7 x -1806835-31 x -407995-35 x -361367-155 x -81599-217 x -58285-1085 x -11657
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 12,647,845, 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 | 12,647,845 | |
| -1 | -12,647,845 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,647,845.
Example:
1 x 12,647,845 = 12,647,845
and
-1 x -12,647,845 = 12,647,845
Notice both answers equal 12,647,845
With that explanation out of the way, let's continue. Next, we take the number 12,647,845 and divide it by 2:
12,647,845 ÷ 2 = 6,323,922.5
If the quotient is a whole number, then 2 and 6,323,922.5 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 | 12,647,845 | |
| -1 | -12,647,845 |
Now, we try dividing 12,647,845 by 3:
12,647,845 ÷ 3 = 4,215,948.3333
If the quotient is a whole number, then 3 and 4,215,948.3333 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 | 12,647,845 | |
| -1 | -12,647,845 |
Let's try dividing by 4:
12,647,845 ÷ 4 = 3,161,961.25
If the quotient is a whole number, then 4 and 3,161,961.25 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 | 12,647,845 | |
| -1 | 12,647,845 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 31 | 35 | 155 | 217 | 1,085 | 11,657 | 58,285 | 81,599 | 361,367 | 407,995 | 1,806,835 | 2,529,569 | 12,647,845 |
| -1 | -5 | -7 | -31 | -35 | -155 | -217 | -1,085 | -11,657 | -58,285 | -81,599 | -361,367 | -407,995 | -1,806,835 | -2,529,569 | -12,647,845 |
Here are some more numbers to try:
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