A:
Positive:
1 x 269783155 x 53956637 x 385404513 x 207525535 x 77080965 x 41505191 x 296465169 x 159635455 x 59293845 x 319271183 x 228054561 x 5915
Negative:
-1 x -26978315-5 x -5395663-7 x -3854045-13 x -2075255-35 x -770809-65 x -415051-91 x -296465-169 x -159635-455 x -59293-845 x -31927-1183 x -22805-4561 x -5915
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 26,978,315, 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 | 26,978,315 | |
| -1 | -26,978,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,978,315.
Example:
1 x 26,978,315 = 26,978,315
and
-1 x -26,978,315 = 26,978,315
Notice both answers equal 26,978,315
With that explanation out of the way, let's continue. Next, we take the number 26,978,315 and divide it by 2:
26,978,315 ÷ 2 = 13,489,157.5
If the quotient is a whole number, then 2 and 13,489,157.5 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 | 26,978,315 | |
| -1 | -26,978,315 |
Now, we try dividing 26,978,315 by 3:
26,978,315 ÷ 3 = 8,992,771.6667
If the quotient is a whole number, then 3 and 8,992,771.6667 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 | 26,978,315 | |
| -1 | -26,978,315 |
Let's try dividing by 4:
26,978,315 ÷ 4 = 6,744,578.75
If the quotient is a whole number, then 4 and 6,744,578.75 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 | 26,978,315 | |
| -1 | 26,978,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 13 | 35 | 65 | 91 | 169 | 455 | 845 | 1,183 | 4,561 | 5,915 | 22,805 | 31,927 | 59,293 | 159,635 | 296,465 | 415,051 | 770,809 | 2,075,255 | 3,854,045 | 5,395,663 | 26,978,315 |
| -1 | -5 | -7 | -13 | -35 | -65 | -91 | -169 | -455 | -845 | -1,183 | -4,561 | -5,915 | -22,805 | -31,927 | -59,293 | -159,635 | -296,465 | -415,051 | -770,809 | -2,075,255 | -3,854,045 | -5,395,663 | -26,978,315 |
Here are some more numbers to try:
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