A:
Positive:
1 x 2062261311 x 187478347 x 438779113 x 182501353 x 58421517 x 398891243 x 165913883 x 5311
Negative:
-1 x -20622613-11 x -1874783-47 x -438779-113 x -182501-353 x -58421-517 x -39889-1243 x -16591-3883 x -5311
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 20,622,613, 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 | 20,622,613 | |
| -1 | -20,622,613 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,622,613.
Example:
1 x 20,622,613 = 20,622,613
and
-1 x -20,622,613 = 20,622,613
Notice both answers equal 20,622,613
With that explanation out of the way, let's continue. Next, we take the number 20,622,613 and divide it by 2:
20,622,613 ÷ 2 = 10,311,306.5
If the quotient is a whole number, then 2 and 10,311,306.5 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 | 20,622,613 | |
| -1 | -20,622,613 |
Now, we try dividing 20,622,613 by 3:
20,622,613 ÷ 3 = 6,874,204.3333
If the quotient is a whole number, then 3 and 6,874,204.3333 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 | 20,622,613 | |
| -1 | -20,622,613 |
Let's try dividing by 4:
20,622,613 ÷ 4 = 5,155,653.25
If the quotient is a whole number, then 4 and 5,155,653.25 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 | 20,622,613 | |
| -1 | 20,622,613 |
If you did it right, you will end up with this table:
| 1 | 11 | 47 | 113 | 353 | 517 | 1,243 | 3,883 | 5,311 | 16,591 | 39,889 | 58,421 | 182,501 | 438,779 | 1,874,783 | 20,622,613 |
| -1 | -11 | -47 | -113 | -353 | -517 | -1,243 | -3,883 | -5,311 | -16,591 | -39,889 | -58,421 | -182,501 | -438,779 | -1,874,783 | -20,622,613 |
Here are some more numbers to try:
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