A:
Positive:
1 x 267201655 x 534403329 x 921385127 x 210395145 x 184277635 x 420791451 x 184153683 x 7255
Negative:
-1 x -26720165-5 x -5344033-29 x -921385-127 x -210395-145 x -184277-635 x -42079-1451 x -18415-3683 x -7255
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 26,720,165, 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 | 26,720,165 | |
| -1 | -26,720,165 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,720,165.
Example:
1 x 26,720,165 = 26,720,165
and
-1 x -26,720,165 = 26,720,165
Notice both answers equal 26,720,165
With that explanation out of the way, let's continue. Next, we take the number 26,720,165 and divide it by 2:
26,720,165 ÷ 2 = 13,360,082.5
If the quotient is a whole number, then 2 and 13,360,082.5 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 | 26,720,165 | |
| -1 | -26,720,165 |
Now, we try dividing 26,720,165 by 3:
26,720,165 ÷ 3 = 8,906,721.6667
If the quotient is a whole number, then 3 and 8,906,721.6667 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 | 26,720,165 | |
| -1 | -26,720,165 |
Let's try dividing by 4:
26,720,165 ÷ 4 = 6,680,041.25
If the quotient is a whole number, then 4 and 6,680,041.25 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 | 26,720,165 | |
| -1 | 26,720,165 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 127 | 145 | 635 | 1,451 | 3,683 | 7,255 | 18,415 | 42,079 | 184,277 | 210,395 | 921,385 | 5,344,033 | 26,720,165 |
| -1 | -5 | -29 | -127 | -145 | -635 | -1,451 | -3,683 | -7,255 | -18,415 | -42,079 | -184,277 | -210,395 | -921,385 | -5,344,033 | -26,720,165 |
Here are some more numbers to try:
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