A:
Positive:
1 x 263155137 x 375935919 x 1385027133 x 197861241 x 109193821 x 320531687 x 155994579 x 5747
Negative:
-1 x -26315513-7 x -3759359-19 x -1385027-133 x -197861-241 x -109193-821 x -32053-1687 x -15599-4579 x -5747
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 26,315,513, 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 | 26,315,513 | |
| -1 | -26,315,513 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,315,513.
Example:
1 x 26,315,513 = 26,315,513
and
-1 x -26,315,513 = 26,315,513
Notice both answers equal 26,315,513
With that explanation out of the way, let's continue. Next, we take the number 26,315,513 and divide it by 2:
26,315,513 ÷ 2 = 13,157,756.5
If the quotient is a whole number, then 2 and 13,157,756.5 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 | 26,315,513 | |
| -1 | -26,315,513 |
Now, we try dividing 26,315,513 by 3:
26,315,513 ÷ 3 = 8,771,837.6667
If the quotient is a whole number, then 3 and 8,771,837.6667 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 | 26,315,513 | |
| -1 | -26,315,513 |
Let's try dividing by 4:
26,315,513 ÷ 4 = 6,578,878.25
If the quotient is a whole number, then 4 and 6,578,878.25 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 | 26,315,513 | |
| -1 | 26,315,513 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 133 | 241 | 821 | 1,687 | 4,579 | 5,747 | 15,599 | 32,053 | 109,193 | 197,861 | 1,385,027 | 3,759,359 | 26,315,513 |
| -1 | -7 | -19 | -133 | -241 | -821 | -1,687 | -4,579 | -5,747 | -15,599 | -32,053 | -109,193 | -197,861 | -1,385,027 | -3,759,359 | -26,315,513 |
Here are some more numbers to try:
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