A:
Positive:
1 x 2550149931 x 822629149 x 1711514619 x 5521
Negative:
-1 x -25501499-31 x -822629-149 x -171151-4619 x -5521
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 25,501,499, 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 | 25,501,499 | |
| -1 | -25,501,499 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,501,499.
Example:
1 x 25,501,499 = 25,501,499
and
-1 x -25,501,499 = 25,501,499
Notice both answers equal 25,501,499
With that explanation out of the way, let's continue. Next, we take the number 25,501,499 and divide it by 2:
25,501,499 ÷ 2 = 12,750,749.5
If the quotient is a whole number, then 2 and 12,750,749.5 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 | 25,501,499 | |
| -1 | -25,501,499 |
Now, we try dividing 25,501,499 by 3:
25,501,499 ÷ 3 = 8,500,499.6667
If the quotient is a whole number, then 3 and 8,500,499.6667 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 | 25,501,499 | |
| -1 | -25,501,499 |
Let's try dividing by 4:
25,501,499 ÷ 4 = 6,375,374.75
If the quotient is a whole number, then 4 and 6,375,374.75 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 | 25,501,499 | |
| -1 | 25,501,499 |
If you did it right, you will end up with this table:
| 1 | 31 | 149 | 4,619 | 5,521 | 171,151 | 822,629 | 25,501,499 |
| -1 | -31 | -149 | -4,619 | -5,521 | -171,151 | -822,629 | -25,501,499 |
Here are some more numbers to try:
Try the factor calculator