A:
Positive:
1 x 19897997 x 28425717 x 11704723 x 86513119 x 16721161 x 12359391 x 5089727 x 2737
Negative:
-1 x -1989799-7 x -284257-17 x -117047-23 x -86513-119 x -16721-161 x -12359-391 x -5089-727 x -2737
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 1,989,799, 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 | 1,989,799 | |
| -1 | -1,989,799 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,989,799.
Example:
1 x 1,989,799 = 1,989,799
and
-1 x -1,989,799 = 1,989,799
Notice both answers equal 1,989,799
With that explanation out of the way, let's continue. Next, we take the number 1,989,799 and divide it by 2:
1,989,799 ÷ 2 = 994,899.5
If the quotient is a whole number, then 2 and 994,899.5 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 | 1,989,799 | |
| -1 | -1,989,799 |
Now, we try dividing 1,989,799 by 3:
1,989,799 ÷ 3 = 663,266.3333
If the quotient is a whole number, then 3 and 663,266.3333 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 | 1,989,799 | |
| -1 | -1,989,799 |
Let's try dividing by 4:
1,989,799 ÷ 4 = 497,449.75
If the quotient is a whole number, then 4 and 497,449.75 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 | 1,989,799 | |
| -1 | 1,989,799 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 23 | 119 | 161 | 391 | 727 | 2,737 | 5,089 | 12,359 | 16,721 | 86,513 | 117,047 | 284,257 | 1,989,799 |
| -1 | -7 | -17 | -23 | -119 | -161 | -391 | -727 | -2,737 | -5,089 | -12,359 | -16,721 | -86,513 | -117,047 | -284,257 | -1,989,799 |
Here are some more numbers to try:
Try the factor calculator