A:
Positive:
1 x 2715751717 x 159750119 x 142934383 x 327199323 x 840791013 x 268091411 x 192471577 x 17221
Negative:
-1 x -27157517-17 x -1597501-19 x -1429343-83 x -327199-323 x -84079-1013 x -26809-1411 x -19247-1577 x -17221
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 27,157,517, 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 | 27,157,517 | |
| -1 | -27,157,517 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,157,517.
Example:
1 x 27,157,517 = 27,157,517
and
-1 x -27,157,517 = 27,157,517
Notice both answers equal 27,157,517
With that explanation out of the way, let's continue. Next, we take the number 27,157,517 and divide it by 2:
27,157,517 ÷ 2 = 13,578,758.5
If the quotient is a whole number, then 2 and 13,578,758.5 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 | 27,157,517 | |
| -1 | -27,157,517 |
Now, we try dividing 27,157,517 by 3:
27,157,517 ÷ 3 = 9,052,505.6667
If the quotient is a whole number, then 3 and 9,052,505.6667 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 | 27,157,517 | |
| -1 | -27,157,517 |
Let's try dividing by 4:
27,157,517 ÷ 4 = 6,789,379.25
If the quotient is a whole number, then 4 and 6,789,379.25 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 | 27,157,517 | |
| -1 | 27,157,517 |
If you did it right, you will end up with this table:
| 1 | 17 | 19 | 83 | 323 | 1,013 | 1,411 | 1,577 | 17,221 | 19,247 | 26,809 | 84,079 | 327,199 | 1,429,343 | 1,597,501 | 27,157,517 |
| -1 | -17 | -19 | -83 | -323 | -1,013 | -1,411 | -1,577 | -17,221 | -19,247 | -26,809 | -84,079 | -327,199 | -1,429,343 | -1,597,501 | -27,157,517 |
Here are some more numbers to try:
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