A:
Positive:
1 x 2062778311 x 187525317 x 121339947 x 438889187 x 110309517 x 39899799 x 258172347 x 8789
Negative:
-1 x -20627783-11 x -1875253-17 x -1213399-47 x -438889-187 x -110309-517 x -39899-799 x -25817-2347 x -8789
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 20,627,783, 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 | 20,627,783 | |
| -1 | -20,627,783 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,627,783.
Example:
1 x 20,627,783 = 20,627,783
and
-1 x -20,627,783 = 20,627,783
Notice both answers equal 20,627,783
With that explanation out of the way, let's continue. Next, we take the number 20,627,783 and divide it by 2:
20,627,783 ÷ 2 = 10,313,891.5
If the quotient is a whole number, then 2 and 10,313,891.5 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 | 20,627,783 | |
| -1 | -20,627,783 |
Now, we try dividing 20,627,783 by 3:
20,627,783 ÷ 3 = 6,875,927.6667
If the quotient is a whole number, then 3 and 6,875,927.6667 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 | 20,627,783 | |
| -1 | -20,627,783 |
Let's try dividing by 4:
20,627,783 ÷ 4 = 5,156,945.75
If the quotient is a whole number, then 4 and 5,156,945.75 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 | 20,627,783 | |
| -1 | 20,627,783 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 47 | 187 | 517 | 799 | 2,347 | 8,789 | 25,817 | 39,899 | 110,309 | 438,889 | 1,213,399 | 1,875,253 | 20,627,783 |
| -1 | -11 | -17 | -47 | -187 | -517 | -799 | -2,347 | -8,789 | -25,817 | -39,899 | -110,309 | -438,889 | -1,213,399 | -1,875,253 | -20,627,783 |
Here are some more numbers to try:
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