A:
Positive:
1 x 197640177 x 282343113 x 152030947 x 42051191 x 217187329 x 60073611 x 323474277 x 4621
Negative:
-1 x -19764017-7 x -2823431-13 x -1520309-47 x -420511-91 x -217187-329 x -60073-611 x -32347-4277 x -4621
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 19,764,017, 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 | 19,764,017 | |
| -1 | -19,764,017 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,764,017.
Example:
1 x 19,764,017 = 19,764,017
and
-1 x -19,764,017 = 19,764,017
Notice both answers equal 19,764,017
With that explanation out of the way, let's continue. Next, we take the number 19,764,017 and divide it by 2:
19,764,017 ÷ 2 = 9,882,008.5
If the quotient is a whole number, then 2 and 9,882,008.5 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 | 19,764,017 | |
| -1 | -19,764,017 |
Now, we try dividing 19,764,017 by 3:
19,764,017 ÷ 3 = 6,588,005.6667
If the quotient is a whole number, then 3 and 6,588,005.6667 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 | 19,764,017 | |
| -1 | -19,764,017 |
Let's try dividing by 4:
19,764,017 ÷ 4 = 4,941,004.25
If the quotient is a whole number, then 4 and 4,941,004.25 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 | 19,764,017 | |
| -1 | 19,764,017 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 47 | 91 | 329 | 611 | 4,277 | 4,621 | 32,347 | 60,073 | 217,187 | 420,511 | 1,520,309 | 2,823,431 | 19,764,017 |
| -1 | -7 | -13 | -47 | -91 | -329 | -611 | -4,277 | -4,621 | -32,347 | -60,073 | -217,187 | -420,511 | -1,520,309 | -2,823,431 | -19,764,017 |
Here are some more numbers to try:
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