A:
Positive:
1 x 1319761311 x 119978313 x 101520141 x 321893143 x 92291451 x 29263533 x 247612251 x 5863
Negative:
-1 x -13197613-11 x -1199783-13 x -1015201-41 x -321893-143 x -92291-451 x -29263-533 x -24761-2251 x -5863
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 13,197,613, 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 | 13,197,613 | |
| -1 | -13,197,613 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,197,613.
Example:
1 x 13,197,613 = 13,197,613
and
-1 x -13,197,613 = 13,197,613
Notice both answers equal 13,197,613
With that explanation out of the way, let's continue. Next, we take the number 13,197,613 and divide it by 2:
13,197,613 ÷ 2 = 6,598,806.5
If the quotient is a whole number, then 2 and 6,598,806.5 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 | 13,197,613 | |
| -1 | -13,197,613 |
Now, we try dividing 13,197,613 by 3:
13,197,613 ÷ 3 = 4,399,204.3333
If the quotient is a whole number, then 3 and 4,399,204.3333 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 | 13,197,613 | |
| -1 | -13,197,613 |
Let's try dividing by 4:
13,197,613 ÷ 4 = 3,299,403.25
If the quotient is a whole number, then 4 and 3,299,403.25 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 | 13,197,613 | |
| -1 | 13,197,613 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 41 | 143 | 451 | 533 | 2,251 | 5,863 | 24,761 | 29,263 | 92,291 | 321,893 | 1,015,201 | 1,199,783 | 13,197,613 |
| -1 | -11 | -13 | -41 | -143 | -451 | -533 | -2,251 | -5,863 | -24,761 | -29,263 | -92,291 | -321,893 | -1,015,201 | -1,199,783 | -13,197,613 |
Here are some more numbers to try:
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