A:
Positive:
1 x 1608747119 x 84670959 x 272669113 x 142367127 x 1266731121 x 143512147 x 74932413 x 6667
Negative:
-1 x -16087471-19 x -846709-59 x -272669-113 x -142367-127 x -126673-1121 x -14351-2147 x -7493-2413 x -6667
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 16,087,471, 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 | 16,087,471 | |
| -1 | -16,087,471 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,087,471.
Example:
1 x 16,087,471 = 16,087,471
and
-1 x -16,087,471 = 16,087,471
Notice both answers equal 16,087,471
With that explanation out of the way, let's continue. Next, we take the number 16,087,471 and divide it by 2:
16,087,471 ÷ 2 = 8,043,735.5
If the quotient is a whole number, then 2 and 8,043,735.5 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 | 16,087,471 | |
| -1 | -16,087,471 |
Now, we try dividing 16,087,471 by 3:
16,087,471 ÷ 3 = 5,362,490.3333
If the quotient is a whole number, then 3 and 5,362,490.3333 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 | 16,087,471 | |
| -1 | -16,087,471 |
Let's try dividing by 4:
16,087,471 ÷ 4 = 4,021,867.75
If the quotient is a whole number, then 4 and 4,021,867.75 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 | 16,087,471 | |
| -1 | 16,087,471 |
If you did it right, you will end up with this table:
| 1 | 19 | 59 | 113 | 127 | 1,121 | 2,147 | 2,413 | 6,667 | 7,493 | 14,351 | 126,673 | 142,367 | 272,669 | 846,709 | 16,087,471 |
| -1 | -19 | -59 | -113 | -127 | -1,121 | -2,147 | -2,413 | -6,667 | -7,493 | -14,351 | -126,673 | -142,367 | -272,669 | -846,709 | -16,087,471 |
Here are some more numbers to try:
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