A:
Positive:
1 x 257123755 x 514247513 x 197787525 x 102849565 x 395575125 x 205699325 x 791151625 x 15823
Negative:
-1 x -25712375-5 x -5142475-13 x -1977875-25 x -1028495-65 x -395575-125 x -205699-325 x -79115-1625 x -15823
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 25,712,375, 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 | 25,712,375 | |
| -1 | -25,712,375 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,712,375.
Example:
1 x 25,712,375 = 25,712,375
and
-1 x -25,712,375 = 25,712,375
Notice both answers equal 25,712,375
With that explanation out of the way, let's continue. Next, we take the number 25,712,375 and divide it by 2:
25,712,375 ÷ 2 = 12,856,187.5
If the quotient is a whole number, then 2 and 12,856,187.5 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 | 25,712,375 | |
| -1 | -25,712,375 |
Now, we try dividing 25,712,375 by 3:
25,712,375 ÷ 3 = 8,570,791.6667
If the quotient is a whole number, then 3 and 8,570,791.6667 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 | 25,712,375 | |
| -1 | -25,712,375 |
Let's try dividing by 4:
25,712,375 ÷ 4 = 6,428,093.75
If the quotient is a whole number, then 4 and 6,428,093.75 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 | 25,712,375 | |
| -1 | 25,712,375 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 125 | 325 | 1,625 | 15,823 | 79,115 | 205,699 | 395,575 | 1,028,495 | 1,977,875 | 5,142,475 | 25,712,375 |
| -1 | -5 | -13 | -25 | -65 | -125 | -325 | -1,625 | -15,823 | -79,115 | -205,699 | -395,575 | -1,028,495 | -1,977,875 | -5,142,475 | -25,712,375 |
Here are some more numbers to try:
Try the factor calculator