A:
Positive:
1 x 268814155 x 537628311 x 244376547 x 57194555 x 488753235 x 114389517 x 519952585 x 10399
Negative:
-1 x -26881415-5 x -5376283-11 x -2443765-47 x -571945-55 x -488753-235 x -114389-517 x -51995-2585 x -10399
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 26,881,415, 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 | 26,881,415 | |
| -1 | -26,881,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,881,415.
Example:
1 x 26,881,415 = 26,881,415
and
-1 x -26,881,415 = 26,881,415
Notice both answers equal 26,881,415
With that explanation out of the way, let's continue. Next, we take the number 26,881,415 and divide it by 2:
26,881,415 ÷ 2 = 13,440,707.5
If the quotient is a whole number, then 2 and 13,440,707.5 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 | 26,881,415 | |
| -1 | -26,881,415 |
Now, we try dividing 26,881,415 by 3:
26,881,415 ÷ 3 = 8,960,471.6667
If the quotient is a whole number, then 3 and 8,960,471.6667 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 | 26,881,415 | |
| -1 | -26,881,415 |
Let's try dividing by 4:
26,881,415 ÷ 4 = 6,720,353.75
If the quotient is a whole number, then 4 and 6,720,353.75 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 | 26,881,415 | |
| -1 | 26,881,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 47 | 55 | 235 | 517 | 2,585 | 10,399 | 51,995 | 114,389 | 488,753 | 571,945 | 2,443,765 | 5,376,283 | 26,881,415 |
| -1 | -5 | -11 | -47 | -55 | -235 | -517 | -2,585 | -10,399 | -51,995 | -114,389 | -488,753 | -571,945 | -2,443,765 | -5,376,283 | -26,881,415 |
Here are some more numbers to try:
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