A:
Positive:
1 x 11972877 x 17104113 x 9209959 x 2029391 x 13157223 x 5369413 x 2899767 x 1561
Negative:
-1 x -1197287-7 x -171041-13 x -92099-59 x -20293-91 x -13157-223 x -5369-413 x -2899-767 x -1561
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 1,197,287, 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 | 1,197,287 | |
| -1 | -1,197,287 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,197,287.
Example:
1 x 1,197,287 = 1,197,287
and
-1 x -1,197,287 = 1,197,287
Notice both answers equal 1,197,287
With that explanation out of the way, let's continue. Next, we take the number 1,197,287 and divide it by 2:
1,197,287 ÷ 2 = 598,643.5
If the quotient is a whole number, then 2 and 598,643.5 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 | 1,197,287 | |
| -1 | -1,197,287 |
Now, we try dividing 1,197,287 by 3:
1,197,287 ÷ 3 = 399,095.6667
If the quotient is a whole number, then 3 and 399,095.6667 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 | 1,197,287 | |
| -1 | -1,197,287 |
Let's try dividing by 4:
1,197,287 ÷ 4 = 299,321.75
If the quotient is a whole number, then 4 and 299,321.75 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 | 1,197,287 | |
| -1 | 1,197,287 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 59 | 91 | 223 | 413 | 767 | 1,561 | 2,899 | 5,369 | 13,157 | 20,293 | 92,099 | 171,041 | 1,197,287 |
| -1 | -7 | -13 | -59 | -91 | -223 | -413 | -767 | -1,561 | -2,899 | -5,369 | -13,157 | -20,293 | -92,099 | -171,041 | -1,197,287 |
Here are some more numbers to try:
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