A:
Positive:
1 x 258771597 x 369673711 x 235246977 x 33606783 x 311773581 x 44539913 x 283434049 x 6391
Negative:
-1 x -25877159-7 x -3696737-11 x -2352469-77 x -336067-83 x -311773-581 x -44539-913 x -28343-4049 x -6391
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 25,877,159, 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 | 25,877,159 | |
| -1 | -25,877,159 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,877,159.
Example:
1 x 25,877,159 = 25,877,159
and
-1 x -25,877,159 = 25,877,159
Notice both answers equal 25,877,159
With that explanation out of the way, let's continue. Next, we take the number 25,877,159 and divide it by 2:
25,877,159 ÷ 2 = 12,938,579.5
If the quotient is a whole number, then 2 and 12,938,579.5 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 | 25,877,159 | |
| -1 | -25,877,159 |
Now, we try dividing 25,877,159 by 3:
25,877,159 ÷ 3 = 8,625,719.6667
If the quotient is a whole number, then 3 and 8,625,719.6667 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 | 25,877,159 | |
| -1 | -25,877,159 |
Let's try dividing by 4:
25,877,159 ÷ 4 = 6,469,289.75
If the quotient is a whole number, then 4 and 6,469,289.75 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 | 25,877,159 | |
| -1 | 25,877,159 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 83 | 581 | 913 | 4,049 | 6,391 | 28,343 | 44,539 | 311,773 | 336,067 | 2,352,469 | 3,696,737 | 25,877,159 |
| -1 | -7 | -11 | -77 | -83 | -581 | -913 | -4,049 | -6,391 | -28,343 | -44,539 | -311,773 | -336,067 | -2,352,469 | -3,696,737 | -25,877,159 |
Here are some more numbers to try:
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