A:
Positive:
1 x 2179288937 x 58899759 x 36937167 x 325267149 x 1462612183 x 99832479 x 87913953 x 5513
Negative:
-1 x -21792889-37 x -588997-59 x -369371-67 x -325267-149 x -146261-2183 x -9983-2479 x -8791-3953 x -5513
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 21,792,889, 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 | 21,792,889 | |
| -1 | -21,792,889 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,792,889.
Example:
1 x 21,792,889 = 21,792,889
and
-1 x -21,792,889 = 21,792,889
Notice both answers equal 21,792,889
With that explanation out of the way, let's continue. Next, we take the number 21,792,889 and divide it by 2:
21,792,889 ÷ 2 = 10,896,444.5
If the quotient is a whole number, then 2 and 10,896,444.5 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 | 21,792,889 | |
| -1 | -21,792,889 |
Now, we try dividing 21,792,889 by 3:
21,792,889 ÷ 3 = 7,264,296.3333
If the quotient is a whole number, then 3 and 7,264,296.3333 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 | 21,792,889 | |
| -1 | -21,792,889 |
Let's try dividing by 4:
21,792,889 ÷ 4 = 5,448,222.25
If the quotient is a whole number, then 4 and 5,448,222.25 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 | 21,792,889 | |
| -1 | 21,792,889 |
If you did it right, you will end up with this table:
| 1 | 37 | 59 | 67 | 149 | 2,183 | 2,479 | 3,953 | 5,513 | 8,791 | 9,983 | 146,261 | 325,267 | 369,371 | 588,997 | 21,792,889 |
| -1 | -37 | -59 | -67 | -149 | -2,183 | -2,479 | -3,953 | -5,513 | -8,791 | -9,983 | -146,261 | -325,267 | -369,371 | -588,997 | -21,792,889 |
Here are some more numbers to try:
Try the factor calculator