A:
Positive:
1 x 276554155 x 553108329 x 95363589 x 310735145 x 190727445 x 621472143 x 129052581 x 10715
Negative:
-1 x -27655415-5 x -5531083-29 x -953635-89 x -310735-145 x -190727-445 x -62147-2143 x -12905-2581 x -10715
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 27,655,415, 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 | 27,655,415 | |
| -1 | -27,655,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,655,415.
Example:
1 x 27,655,415 = 27,655,415
and
-1 x -27,655,415 = 27,655,415
Notice both answers equal 27,655,415
With that explanation out of the way, let's continue. Next, we take the number 27,655,415 and divide it by 2:
27,655,415 ÷ 2 = 13,827,707.5
If the quotient is a whole number, then 2 and 13,827,707.5 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 | 27,655,415 | |
| -1 | -27,655,415 |
Now, we try dividing 27,655,415 by 3:
27,655,415 ÷ 3 = 9,218,471.6667
If the quotient is a whole number, then 3 and 9,218,471.6667 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 | 27,655,415 | |
| -1 | -27,655,415 |
Let's try dividing by 4:
27,655,415 ÷ 4 = 6,913,853.75
If the quotient is a whole number, then 4 and 6,913,853.75 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 | 27,655,415 | |
| -1 | 27,655,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 89 | 145 | 445 | 2,143 | 2,581 | 10,715 | 12,905 | 62,147 | 190,727 | 310,735 | 953,635 | 5,531,083 | 27,655,415 |
| -1 | -5 | -29 | -89 | -145 | -445 | -2,143 | -2,581 | -10,715 | -12,905 | -62,147 | -190,727 | -310,735 | -953,635 | -5,531,083 | -27,655,415 |
Here are some more numbers to try:
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