A:
Positive:
1 x 2570755 x 514157 x 3672513 x 1977525 x 1028335 x 734565 x 395591 x 2825113 x 2275175 x 1469325 x 791455 x 565
Negative:
-1 x -257075-5 x -51415-7 x -36725-13 x -19775-25 x -10283-35 x -7345-65 x -3955-91 x -2825-113 x -2275-175 x -1469-325 x -791-455 x -565
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 257,075, 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 | 257,075 | |
| -1 | -257,075 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 257,075.
Example:
1 x 257,075 = 257,075
and
-1 x -257,075 = 257,075
Notice both answers equal 257,075
With that explanation out of the way, let's continue. Next, we take the number 257,075 and divide it by 2:
257,075 ÷ 2 = 128,537.5
If the quotient is a whole number, then 2 and 128,537.5 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 | 257,075 | |
| -1 | -257,075 |
Now, we try dividing 257,075 by 3:
257,075 ÷ 3 = 85,691.6667
If the quotient is a whole number, then 3 and 85,691.6667 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 | 257,075 | |
| -1 | -257,075 |
Let's try dividing by 4:
257,075 ÷ 4 = 64,268.75
If the quotient is a whole number, then 4 and 64,268.75 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 | 257,075 | |
| -1 | 257,075 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 13 | 25 | 35 | 65 | 91 | 113 | 175 | 325 | 455 | 565 | 791 | 1,469 | 2,275 | 2,825 | 3,955 | 7,345 | 10,283 | 19,775 | 36,725 | 51,415 | 257,075 |
| -1 | -5 | -7 | -13 | -25 | -35 | -65 | -91 | -113 | -175 | -325 | -455 | -565 | -791 | -1,469 | -2,275 | -2,825 | -3,955 | -7,345 | -10,283 | -19,775 | -36,725 | -51,415 | -257,075 |
Here are some more numbers to try:
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