A:
Positive:
1 x 254133355 x 508266731 x 819785127 x 200105155 x 163957635 x 400211291 x 196853937 x 6455
Negative:
-1 x -25413335-5 x -5082667-31 x -819785-127 x -200105-155 x -163957-635 x -40021-1291 x -19685-3937 x -6455
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 25,413,335, 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 | 25,413,335 | |
| -1 | -25,413,335 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,413,335.
Example:
1 x 25,413,335 = 25,413,335
and
-1 x -25,413,335 = 25,413,335
Notice both answers equal 25,413,335
With that explanation out of the way, let's continue. Next, we take the number 25,413,335 and divide it by 2:
25,413,335 ÷ 2 = 12,706,667.5
If the quotient is a whole number, then 2 and 12,706,667.5 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 | 25,413,335 | |
| -1 | -25,413,335 |
Now, we try dividing 25,413,335 by 3:
25,413,335 ÷ 3 = 8,471,111.6667
If the quotient is a whole number, then 3 and 8,471,111.6667 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 | 25,413,335 | |
| -1 | -25,413,335 |
Let's try dividing by 4:
25,413,335 ÷ 4 = 6,353,333.75
If the quotient is a whole number, then 4 and 6,353,333.75 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 | 25,413,335 | |
| -1 | 25,413,335 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 127 | 155 | 635 | 1,291 | 3,937 | 6,455 | 19,685 | 40,021 | 163,957 | 200,105 | 819,785 | 5,082,667 | 25,413,335 |
| -1 | -5 | -31 | -127 | -155 | -635 | -1,291 | -3,937 | -6,455 | -19,685 | -40,021 | -163,957 | -200,105 | -819,785 | -5,082,667 | -25,413,335 |
Here are some more numbers to try:
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