A:
Positive:
1 x 2083044711 x 189367743 x 48442947 x 443201473 x 44039517 x 40291937 x 222312021 x 10307
Negative:
-1 x -20830447-11 x -1893677-43 x -484429-47 x -443201-473 x -44039-517 x -40291-937 x -22231-2021 x -10307
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 20,830,447, 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 | 20,830,447 | |
| -1 | -20,830,447 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,830,447.
Example:
1 x 20,830,447 = 20,830,447
and
-1 x -20,830,447 = 20,830,447
Notice both answers equal 20,830,447
With that explanation out of the way, let's continue. Next, we take the number 20,830,447 and divide it by 2:
20,830,447 ÷ 2 = 10,415,223.5
If the quotient is a whole number, then 2 and 10,415,223.5 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 | 20,830,447 | |
| -1 | -20,830,447 |
Now, we try dividing 20,830,447 by 3:
20,830,447 ÷ 3 = 6,943,482.3333
If the quotient is a whole number, then 3 and 6,943,482.3333 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 | 20,830,447 | |
| -1 | -20,830,447 |
Let's try dividing by 4:
20,830,447 ÷ 4 = 5,207,611.75
If the quotient is a whole number, then 4 and 5,207,611.75 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 | 20,830,447 | |
| -1 | 20,830,447 |
If you did it right, you will end up with this table:
| 1 | 11 | 43 | 47 | 473 | 517 | 937 | 2,021 | 10,307 | 22,231 | 40,291 | 44,039 | 443,201 | 484,429 | 1,893,677 | 20,830,447 |
| -1 | -11 | -43 | -47 | -473 | -517 | -937 | -2,021 | -10,307 | -22,231 | -40,291 | -44,039 | -443,201 | -484,429 | -1,893,677 | -20,830,447 |
Here are some more numbers to try:
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