A:
Positive:
1 x 204277997 x 291825741 x 498239109 x 187411287 x 71177653 x 31283763 x 267734469 x 4571
Negative:
-1 x -20427799-7 x -2918257-41 x -498239-109 x -187411-287 x -71177-653 x -31283-763 x -26773-4469 x -4571
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 20,427,799, 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 | 20,427,799 | |
| -1 | -20,427,799 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,427,799.
Example:
1 x 20,427,799 = 20,427,799
and
-1 x -20,427,799 = 20,427,799
Notice both answers equal 20,427,799
With that explanation out of the way, let's continue. Next, we take the number 20,427,799 and divide it by 2:
20,427,799 ÷ 2 = 10,213,899.5
If the quotient is a whole number, then 2 and 10,213,899.5 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 | 20,427,799 | |
| -1 | -20,427,799 |
Now, we try dividing 20,427,799 by 3:
20,427,799 ÷ 3 = 6,809,266.3333
If the quotient is a whole number, then 3 and 6,809,266.3333 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 | 20,427,799 | |
| -1 | -20,427,799 |
Let's try dividing by 4:
20,427,799 ÷ 4 = 5,106,949.75
If the quotient is a whole number, then 4 and 5,106,949.75 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 | 20,427,799 | |
| -1 | 20,427,799 |
If you did it right, you will end up with this table:
| 1 | 7 | 41 | 109 | 287 | 653 | 763 | 4,469 | 4,571 | 26,773 | 31,283 | 71,177 | 187,411 | 498,239 | 2,918,257 | 20,427,799 |
| -1 | -7 | -41 | -109 | -287 | -653 | -763 | -4,469 | -4,571 | -26,773 | -31,283 | -71,177 | -187,411 | -498,239 | -2,918,257 | -20,427,799 |
Here are some more numbers to try:
Try the factor calculator