A:
Positive:
1 x 18717797 x 26739713 x 14398367 x 2793791 x 20569307 x 6097469 x 3991871 x 2149
Negative:
-1 x -1871779-7 x -267397-13 x -143983-67 x -27937-91 x -20569-307 x -6097-469 x -3991-871 x -2149
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 1,871,779, 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 | 1,871,779 | |
| -1 | -1,871,779 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,871,779.
Example:
1 x 1,871,779 = 1,871,779
and
-1 x -1,871,779 = 1,871,779
Notice both answers equal 1,871,779
With that explanation out of the way, let's continue. Next, we take the number 1,871,779 and divide it by 2:
1,871,779 ÷ 2 = 935,889.5
If the quotient is a whole number, then 2 and 935,889.5 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 | 1,871,779 | |
| -1 | -1,871,779 |
Now, we try dividing 1,871,779 by 3:
1,871,779 ÷ 3 = 623,926.3333
If the quotient is a whole number, then 3 and 623,926.3333 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 | 1,871,779 | |
| -1 | -1,871,779 |
Let's try dividing by 4:
1,871,779 ÷ 4 = 467,944.75
If the quotient is a whole number, then 4 and 467,944.75 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 | 1,871,779 | |
| -1 | 1,871,779 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 67 | 91 | 307 | 469 | 871 | 2,149 | 3,991 | 6,097 | 20,569 | 27,937 | 143,983 | 267,397 | 1,871,779 |
| -1 | -7 | -13 | -67 | -91 | -307 | -469 | -871 | -2,149 | -3,991 | -6,097 | -20,569 | -27,937 | -143,983 | -267,397 | -1,871,779 |
Here are some more numbers to try:
Try the factor calculator