A:
Positive:
1 x 257307477 x 367582167 x 38404183 x 310009469 x 54863581 x 44287661 x 389274627 x 5561
Negative:
-1 x -25730747-7 x -3675821-67 x -384041-83 x -310009-469 x -54863-581 x -44287-661 x -38927-4627 x -5561
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 25,730,747, 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 | 25,730,747 | |
| -1 | -25,730,747 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,730,747.
Example:
1 x 25,730,747 = 25,730,747
and
-1 x -25,730,747 = 25,730,747
Notice both answers equal 25,730,747
With that explanation out of the way, let's continue. Next, we take the number 25,730,747 and divide it by 2:
25,730,747 ÷ 2 = 12,865,373.5
If the quotient is a whole number, then 2 and 12,865,373.5 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 | 25,730,747 | |
| -1 | -25,730,747 |
Now, we try dividing 25,730,747 by 3:
25,730,747 ÷ 3 = 8,576,915.6667
If the quotient is a whole number, then 3 and 8,576,915.6667 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 | 25,730,747 | |
| -1 | -25,730,747 |
Let's try dividing by 4:
25,730,747 ÷ 4 = 6,432,686.75
If the quotient is a whole number, then 4 and 6,432,686.75 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 | 25,730,747 | |
| -1 | 25,730,747 |
If you did it right, you will end up with this table:
| 1 | 7 | 67 | 83 | 469 | 581 | 661 | 4,627 | 5,561 | 38,927 | 44,287 | 54,863 | 310,009 | 384,041 | 3,675,821 | 25,730,747 |
| -1 | -7 | -67 | -83 | -469 | -581 | -661 | -4,627 | -5,561 | -38,927 | -44,287 | -54,863 | -310,009 | -384,041 | -3,675,821 | -25,730,747 |
Here are some more numbers to try:
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