A:
Positive:
1 x 2597944713 x 199841929 x 895843137 x 189631377 x 68911503 x 516491781 x 145873973 x 6539
Negative:
-1 x -25979447-13 x -1998419-29 x -895843-137 x -189631-377 x -68911-503 x -51649-1781 x -14587-3973 x -6539
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 25,979,447, 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 | 25,979,447 | |
| -1 | -25,979,447 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,979,447.
Example:
1 x 25,979,447 = 25,979,447
and
-1 x -25,979,447 = 25,979,447
Notice both answers equal 25,979,447
With that explanation out of the way, let's continue. Next, we take the number 25,979,447 and divide it by 2:
25,979,447 ÷ 2 = 12,989,723.5
If the quotient is a whole number, then 2 and 12,989,723.5 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 | 25,979,447 | |
| -1 | -25,979,447 |
Now, we try dividing 25,979,447 by 3:
25,979,447 ÷ 3 = 8,659,815.6667
If the quotient is a whole number, then 3 and 8,659,815.6667 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 | 25,979,447 | |
| -1 | -25,979,447 |
Let's try dividing by 4:
25,979,447 ÷ 4 = 6,494,861.75
If the quotient is a whole number, then 4 and 6,494,861.75 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 | 25,979,447 | |
| -1 | 25,979,447 |
If you did it right, you will end up with this table:
| 1 | 13 | 29 | 137 | 377 | 503 | 1,781 | 3,973 | 6,539 | 14,587 | 51,649 | 68,911 | 189,631 | 895,843 | 1,998,419 | 25,979,447 |
| -1 | -13 | -29 | -137 | -377 | -503 | -1,781 | -3,973 | -6,539 | -14,587 | -51,649 | -68,911 | -189,631 | -895,843 | -1,998,419 | -25,979,447 |
Here are some more numbers to try:
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