A:
Positive:
1 x 2021301711 x 183754717 x 118900119 x 1063843187 x 108091209 x 96713323 x 625793553 x 5689
Negative:
-1 x -20213017-11 x -1837547-17 x -1189001-19 x -1063843-187 x -108091-209 x -96713-323 x -62579-3553 x -5689
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 20,213,017, 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 | 20,213,017 | |
| -1 | -20,213,017 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,213,017.
Example:
1 x 20,213,017 = 20,213,017
and
-1 x -20,213,017 = 20,213,017
Notice both answers equal 20,213,017
With that explanation out of the way, let's continue. Next, we take the number 20,213,017 and divide it by 2:
20,213,017 ÷ 2 = 10,106,508.5
If the quotient is a whole number, then 2 and 10,106,508.5 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 | 20,213,017 | |
| -1 | -20,213,017 |
Now, we try dividing 20,213,017 by 3:
20,213,017 ÷ 3 = 6,737,672.3333
If the quotient is a whole number, then 3 and 6,737,672.3333 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 | 20,213,017 | |
| -1 | -20,213,017 |
Let's try dividing by 4:
20,213,017 ÷ 4 = 5,053,254.25
If the quotient is a whole number, then 4 and 5,053,254.25 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 | 20,213,017 | |
| -1 | 20,213,017 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 19 | 187 | 209 | 323 | 3,553 | 5,689 | 62,579 | 96,713 | 108,091 | 1,063,843 | 1,189,001 | 1,837,547 | 20,213,017 |
| -1 | -11 | -17 | -19 | -187 | -209 | -323 | -3,553 | -5,689 | -62,579 | -96,713 | -108,091 | -1,063,843 | -1,189,001 | -1,837,547 | -20,213,017 |
Here are some more numbers to try:
Try the factor calculator