A:
Positive:
1 x 259866113 x 19989729 x 8960961 x 42601113 x 22997377 x 6893793 x 32771469 x 1769
Negative:
-1 x -2598661-13 x -199897-29 x -89609-61 x -42601-113 x -22997-377 x -6893-793 x -3277-1469 x -1769
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 2,598,661, 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 | 2,598,661 | |
| -1 | -2,598,661 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,598,661.
Example:
1 x 2,598,661 = 2,598,661
and
-1 x -2,598,661 = 2,598,661
Notice both answers equal 2,598,661
With that explanation out of the way, let's continue. Next, we take the number 2,598,661 and divide it by 2:
2,598,661 ÷ 2 = 1,299,330.5
If the quotient is a whole number, then 2 and 1,299,330.5 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 | 2,598,661 | |
| -1 | -2,598,661 |
Now, we try dividing 2,598,661 by 3:
2,598,661 ÷ 3 = 866,220.3333
If the quotient is a whole number, then 3 and 866,220.3333 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 | 2,598,661 | |
| -1 | -2,598,661 |
Let's try dividing by 4:
2,598,661 ÷ 4 = 649,665.25
If the quotient is a whole number, then 4 and 649,665.25 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 | 2,598,661 | |
| -1 | 2,598,661 |
If you did it right, you will end up with this table:
| 1 | 13 | 29 | 61 | 113 | 377 | 793 | 1,469 | 1,769 | 3,277 | 6,893 | 22,997 | 42,601 | 89,609 | 199,897 | 2,598,661 |
| -1 | -13 | -29 | -61 | -113 | -377 | -793 | -1,469 | -1,769 | -3,277 | -6,893 | -22,997 | -42,601 | -89,609 | -199,897 | -2,598,661 |
Here are some more numbers to try:
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