A:
Positive:
1 x 13971797 x 19959717 x 8218759 x 23681119 x 11741199 x 7021413 x 33831003 x 1393
Negative:
-1 x -1397179-7 x -199597-17 x -82187-59 x -23681-119 x -11741-199 x -7021-413 x -3383-1003 x -1393
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 1,397,179, 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 | 1,397,179 | |
| -1 | -1,397,179 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,397,179.
Example:
1 x 1,397,179 = 1,397,179
and
-1 x -1,397,179 = 1,397,179
Notice both answers equal 1,397,179
With that explanation out of the way, let's continue. Next, we take the number 1,397,179 and divide it by 2:
1,397,179 ÷ 2 = 698,589.5
If the quotient is a whole number, then 2 and 698,589.5 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 | 1,397,179 | |
| -1 | -1,397,179 |
Now, we try dividing 1,397,179 by 3:
1,397,179 ÷ 3 = 465,726.3333
If the quotient is a whole number, then 3 and 465,726.3333 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 | 1,397,179 | |
| -1 | -1,397,179 |
Let's try dividing by 4:
1,397,179 ÷ 4 = 349,294.75
If the quotient is a whole number, then 4 and 349,294.75 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 | 1,397,179 | |
| -1 | 1,397,179 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 59 | 119 | 199 | 413 | 1,003 | 1,393 | 3,383 | 7,021 | 11,741 | 23,681 | 82,187 | 199,597 | 1,397,179 |
| -1 | -7 | -17 | -59 | -119 | -199 | -413 | -1,003 | -1,393 | -3,383 | -7,021 | -11,741 | -23,681 | -82,187 | -199,597 | -1,397,179 |
Here are some more numbers to try:
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