A:
Positive:
1 x 2514613919 x 1323481293 x 858234517 x 5567
Negative:
-1 x -25146139-19 x -1323481-293 x -85823-4517 x -5567
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 25,146,139, 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 | 25,146,139 | |
| -1 | -25,146,139 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,146,139.
Example:
1 x 25,146,139 = 25,146,139
and
-1 x -25,146,139 = 25,146,139
Notice both answers equal 25,146,139
With that explanation out of the way, let's continue. Next, we take the number 25,146,139 and divide it by 2:
25,146,139 ÷ 2 = 12,573,069.5
If the quotient is a whole number, then 2 and 12,573,069.5 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 | 25,146,139 | |
| -1 | -25,146,139 |
Now, we try dividing 25,146,139 by 3:
25,146,139 ÷ 3 = 8,382,046.3333
If the quotient is a whole number, then 3 and 8,382,046.3333 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 | 25,146,139 | |
| -1 | -25,146,139 |
Let's try dividing by 4:
25,146,139 ÷ 4 = 6,286,534.75
If the quotient is a whole number, then 4 and 6,286,534.75 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 | 25,146,139 | |
| -1 | 25,146,139 |
If you did it right, you will end up with this table:
| 1 | 19 | 293 | 4,517 | 5,567 | 85,823 | 1,323,481 | 25,146,139 |
| -1 | -19 | -293 | -4,517 | -5,567 | -85,823 | -1,323,481 | -25,146,139 |
Here are some more numbers to try:
Try the factor calculator