A:
Positive:
1 x 2525560713 x 194273929 x 87088331 x 814697377 x 66991403 x 62669899 x 280932161 x 11687
Negative:
-1 x -25255607-13 x -1942739-29 x -870883-31 x -814697-377 x -66991-403 x -62669-899 x -28093-2161 x -11687
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 25,255,607, 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 | 25,255,607 | |
| -1 | -25,255,607 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,255,607.
Example:
1 x 25,255,607 = 25,255,607
and
-1 x -25,255,607 = 25,255,607
Notice both answers equal 25,255,607
With that explanation out of the way, let's continue. Next, we take the number 25,255,607 and divide it by 2:
25,255,607 ÷ 2 = 12,627,803.5
If the quotient is a whole number, then 2 and 12,627,803.5 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 | 25,255,607 | |
| -1 | -25,255,607 |
Now, we try dividing 25,255,607 by 3:
25,255,607 ÷ 3 = 8,418,535.6667
If the quotient is a whole number, then 3 and 8,418,535.6667 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 | 25,255,607 | |
| -1 | -25,255,607 |
Let's try dividing by 4:
25,255,607 ÷ 4 = 6,313,901.75
If the quotient is a whole number, then 4 and 6,313,901.75 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 | 25,255,607 | |
| -1 | 25,255,607 |
If you did it right, you will end up with this table:
| 1 | 13 | 29 | 31 | 377 | 403 | 899 | 2,161 | 11,687 | 28,093 | 62,669 | 66,991 | 814,697 | 870,883 | 1,942,739 | 25,255,607 |
| -1 | -13 | -29 | -31 | -377 | -403 | -899 | -2,161 | -11,687 | -28,093 | -62,669 | -66,991 | -814,697 | -870,883 | -1,942,739 | -25,255,607 |
Here are some more numbers to try:
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