A:
Positive:
1 x 257474755 x 514949513 x 198057525 x 102989965 x 396115227 x 113425325 x 79223349 x 737751135 x 226851745 x 147552951 x 87254537 x 5675
Negative:
-1 x -25747475-5 x -5149495-13 x -1980575-25 x -1029899-65 x -396115-227 x -113425-325 x -79223-349 x -73775-1135 x -22685-1745 x -14755-2951 x -8725-4537 x -5675
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 25,747,475, 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 | 25,747,475 | |
| -1 | -25,747,475 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,747,475.
Example:
1 x 25,747,475 = 25,747,475
and
-1 x -25,747,475 = 25,747,475
Notice both answers equal 25,747,475
With that explanation out of the way, let's continue. Next, we take the number 25,747,475 and divide it by 2:
25,747,475 ÷ 2 = 12,873,737.5
If the quotient is a whole number, then 2 and 12,873,737.5 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 | 25,747,475 | |
| -1 | -25,747,475 |
Now, we try dividing 25,747,475 by 3:
25,747,475 ÷ 3 = 8,582,491.6667
If the quotient is a whole number, then 3 and 8,582,491.6667 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 | 25,747,475 | |
| -1 | -25,747,475 |
Let's try dividing by 4:
25,747,475 ÷ 4 = 6,436,868.75
If the quotient is a whole number, then 4 and 6,436,868.75 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 | 25,747,475 | |
| -1 | 25,747,475 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 227 | 325 | 349 | 1,135 | 1,745 | 2,951 | 4,537 | 5,675 | 8,725 | 14,755 | 22,685 | 73,775 | 79,223 | 113,425 | 396,115 | 1,029,899 | 1,980,575 | 5,149,495 | 25,747,475 |
| -1 | -5 | -13 | -25 | -65 | -227 | -325 | -349 | -1,135 | -1,745 | -2,951 | -4,537 | -5,675 | -8,725 | -14,755 | -22,685 | -73,775 | -79,223 | -113,425 | -396,115 | -1,029,899 | -1,980,575 | -5,149,495 | -25,747,475 |
Here are some more numbers to try:
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