A:
Positive:
1 x 26605155 x 53210311 x 24186513 x 20465555 x 4837361 x 4361565 x 40931143 x 18605305 x 8723671 x 3965715 x 3721793 x 3355
Negative:
-1 x -2660515-5 x -532103-11 x -241865-13 x -204655-55 x -48373-61 x -43615-65 x -40931-143 x -18605-305 x -8723-671 x -3965-715 x -3721-793 x -3355
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 2,660,515, 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 | 2,660,515 | |
| -1 | -2,660,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,660,515.
Example:
1 x 2,660,515 = 2,660,515
and
-1 x -2,660,515 = 2,660,515
Notice both answers equal 2,660,515
With that explanation out of the way, let's continue. Next, we take the number 2,660,515 and divide it by 2:
2,660,515 ÷ 2 = 1,330,257.5
If the quotient is a whole number, then 2 and 1,330,257.5 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 | 2,660,515 | |
| -1 | -2,660,515 |
Now, we try dividing 2,660,515 by 3:
2,660,515 ÷ 3 = 886,838.3333
If the quotient is a whole number, then 3 and 886,838.3333 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 | 2,660,515 | |
| -1 | -2,660,515 |
Let's try dividing by 4:
2,660,515 ÷ 4 = 665,128.75
If the quotient is a whole number, then 4 and 665,128.75 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 | 2,660,515 | |
| -1 | 2,660,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 61 | 65 | 143 | 305 | 671 | 715 | 793 | 3,355 | 3,721 | 3,965 | 8,723 | 18,605 | 40,931 | 43,615 | 48,373 | 204,655 | 241,865 | 532,103 | 2,660,515 |
| -1 | -5 | -11 | -13 | -55 | -61 | -65 | -143 | -305 | -671 | -715 | -793 | -3,355 | -3,721 | -3,965 | -8,723 | -18,605 | -40,931 | -43,615 | -48,373 | -204,655 | -241,865 | -532,103 | -2,660,515 |
Here are some more numbers to try:
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