A:
Positive:
1 x 252816355 x 505632717 x 148715543 x 58794585 x 297431215 x 117589731 x 345853655 x 6917
Negative:
-1 x -25281635-5 x -5056327-17 x -1487155-43 x -587945-85 x -297431-215 x -117589-731 x -34585-3655 x -6917
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 25,281,635, 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 | 25,281,635 | |
| -1 | -25,281,635 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,281,635.
Example:
1 x 25,281,635 = 25,281,635
and
-1 x -25,281,635 = 25,281,635
Notice both answers equal 25,281,635
With that explanation out of the way, let's continue. Next, we take the number 25,281,635 and divide it by 2:
25,281,635 ÷ 2 = 12,640,817.5
If the quotient is a whole number, then 2 and 12,640,817.5 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 | 25,281,635 | |
| -1 | -25,281,635 |
Now, we try dividing 25,281,635 by 3:
25,281,635 ÷ 3 = 8,427,211.6667
If the quotient is a whole number, then 3 and 8,427,211.6667 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 | 25,281,635 | |
| -1 | -25,281,635 |
Let's try dividing by 4:
25,281,635 ÷ 4 = 6,320,408.75
If the quotient is a whole number, then 4 and 6,320,408.75 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 | 25,281,635 | |
| -1 | 25,281,635 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 43 | 85 | 215 | 731 | 3,655 | 6,917 | 34,585 | 117,589 | 297,431 | 587,945 | 1,487,155 | 5,056,327 | 25,281,635 |
| -1 | -5 | -17 | -43 | -85 | -215 | -731 | -3,655 | -6,917 | -34,585 | -117,589 | -297,431 | -587,945 | -1,487,155 | -5,056,327 | -25,281,635 |
Here are some more numbers to try:
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