A:
Positive:
1 x 167855877 x 239794113 x 129119949 x 34256391 x 184457169 x 99323637 x 263511183 x 141892027 x 8281
Negative:
-1 x -16785587-7 x -2397941-13 x -1291199-49 x -342563-91 x -184457-169 x -99323-637 x -26351-1183 x -14189-2027 x -8281
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 16,785,587, 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 | 16,785,587 | |
| -1 | -16,785,587 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,785,587.
Example:
1 x 16,785,587 = 16,785,587
and
-1 x -16,785,587 = 16,785,587
Notice both answers equal 16,785,587
With that explanation out of the way, let's continue. Next, we take the number 16,785,587 and divide it by 2:
16,785,587 ÷ 2 = 8,392,793.5
If the quotient is a whole number, then 2 and 8,392,793.5 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 | 16,785,587 | |
| -1 | -16,785,587 |
Now, we try dividing 16,785,587 by 3:
16,785,587 ÷ 3 = 5,595,195.6667
If the quotient is a whole number, then 3 and 5,595,195.6667 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 | 16,785,587 | |
| -1 | -16,785,587 |
Let's try dividing by 4:
16,785,587 ÷ 4 = 4,196,396.75
If the quotient is a whole number, then 4 and 4,196,396.75 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 | 16,785,587 | |
| -1 | 16,785,587 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 49 | 91 | 169 | 637 | 1,183 | 2,027 | 8,281 | 14,189 | 26,351 | 99,323 | 184,457 | 342,563 | 1,291,199 | 2,397,941 | 16,785,587 |
| -1 | -7 | -13 | -49 | -91 | -169 | -637 | -1,183 | -2,027 | -8,281 | -14,189 | -26,351 | -99,323 | -184,457 | -342,563 | -1,291,199 | -2,397,941 | -16,785,587 |
Here are some more numbers to try:
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