A:
Positive:
1 x 187729577 x 268185141 x 457877149 x 125993287 x 65411439 x 427631043 x 179993073 x 6109
Negative:
-1 x -18772957-7 x -2681851-41 x -457877-149 x -125993-287 x -65411-439 x -42763-1043 x -17999-3073 x -6109
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 18,772,957, 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 | 18,772,957 | |
| -1 | -18,772,957 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,772,957.
Example:
1 x 18,772,957 = 18,772,957
and
-1 x -18,772,957 = 18,772,957
Notice both answers equal 18,772,957
With that explanation out of the way, let's continue. Next, we take the number 18,772,957 and divide it by 2:
18,772,957 ÷ 2 = 9,386,478.5
If the quotient is a whole number, then 2 and 9,386,478.5 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 | 18,772,957 | |
| -1 | -18,772,957 |
Now, we try dividing 18,772,957 by 3:
18,772,957 ÷ 3 = 6,257,652.3333
If the quotient is a whole number, then 3 and 6,257,652.3333 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 | 18,772,957 | |
| -1 | -18,772,957 |
Let's try dividing by 4:
18,772,957 ÷ 4 = 4,693,239.25
If the quotient is a whole number, then 4 and 4,693,239.25 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 | 18,772,957 | |
| -1 | 18,772,957 |
If you did it right, you will end up with this table:
| 1 | 7 | 41 | 149 | 287 | 439 | 1,043 | 3,073 | 6,109 | 17,999 | 42,763 | 65,411 | 125,993 | 457,877 | 2,681,851 | 18,772,957 |
| -1 | -7 | -41 | -149 | -287 | -439 | -1,043 | -3,073 | -6,109 | -17,999 | -42,763 | -65,411 | -125,993 | -457,877 | -2,681,851 | -18,772,957 |
Here are some more numbers to try:
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