A:
Positive:
1 x 224210217 x 320300323 x 97482747 x 477043161 x 139261329 x 681491081 x 207412963 x 7567
Negative:
-1 x -22421021-7 x -3203003-23 x -974827-47 x -477043-161 x -139261-329 x -68149-1081 x -20741-2963 x -7567
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 22,421,021, 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 | 22,421,021 | |
| -1 | -22,421,021 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 22,421,021.
Example:
1 x 22,421,021 = 22,421,021
and
-1 x -22,421,021 = 22,421,021
Notice both answers equal 22,421,021
With that explanation out of the way, let's continue. Next, we take the number 22,421,021 and divide it by 2:
22,421,021 ÷ 2 = 11,210,510.5
If the quotient is a whole number, then 2 and 11,210,510.5 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 | 22,421,021 | |
| -1 | -22,421,021 |
Now, we try dividing 22,421,021 by 3:
22,421,021 ÷ 3 = 7,473,673.6667
If the quotient is a whole number, then 3 and 7,473,673.6667 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 | 22,421,021 | |
| -1 | -22,421,021 |
Let's try dividing by 4:
22,421,021 ÷ 4 = 5,605,255.25
If the quotient is a whole number, then 4 and 5,605,255.25 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 | 22,421,021 | |
| -1 | 22,421,021 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 47 | 161 | 329 | 1,081 | 2,963 | 7,567 | 20,741 | 68,149 | 139,261 | 477,043 | 974,827 | 3,203,003 | 22,421,021 |
| -1 | -7 | -23 | -47 | -161 | -329 | -1,081 | -2,963 | -7,567 | -20,741 | -68,149 | -139,261 | -477,043 | -974,827 | -3,203,003 | -22,421,021 |
Here are some more numbers to try:
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