A:
Positive:
1 x 207543077 x 296490147 x 441581199 x 104293317 x 65471329 x 630831393 x 148992219 x 9353
Negative:
-1 x -20754307-7 x -2964901-47 x -441581-199 x -104293-317 x -65471-329 x -63083-1393 x -14899-2219 x -9353
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 20,754,307, 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 | 20,754,307 | |
| -1 | -20,754,307 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,754,307.
Example:
1 x 20,754,307 = 20,754,307
and
-1 x -20,754,307 = 20,754,307
Notice both answers equal 20,754,307
With that explanation out of the way, let's continue. Next, we take the number 20,754,307 and divide it by 2:
20,754,307 ÷ 2 = 10,377,153.5
If the quotient is a whole number, then 2 and 10,377,153.5 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 | 20,754,307 | |
| -1 | -20,754,307 |
Now, we try dividing 20,754,307 by 3:
20,754,307 ÷ 3 = 6,918,102.3333
If the quotient is a whole number, then 3 and 6,918,102.3333 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 | 20,754,307 | |
| -1 | -20,754,307 |
Let's try dividing by 4:
20,754,307 ÷ 4 = 5,188,576.75
If the quotient is a whole number, then 4 and 5,188,576.75 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 | 20,754,307 | |
| -1 | 20,754,307 |
If you did it right, you will end up with this table:
| 1 | 7 | 47 | 199 | 317 | 329 | 1,393 | 2,219 | 9,353 | 14,899 | 63,083 | 65,471 | 104,293 | 441,581 | 2,964,901 | 20,754,307 |
| -1 | -7 | -47 | -199 | -317 | -329 | -1,393 | -2,219 | -9,353 | -14,899 | -63,083 | -65,471 | -104,293 | -441,581 | -2,964,901 | -20,754,307 |
Here are some more numbers to try:
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