A:
Positive:
1 x 5114723911 x 464974913 x 393440323 x 2223793143 x 357673253 x 202163299 x 1710613289 x 15551
Negative:
-1 x -51147239-11 x -4649749-13 x -3934403-23 x -2223793-143 x -357673-253 x -202163-299 x -171061-3289 x -15551
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 51,147,239, 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 | 51,147,239 | |
| -1 | -51,147,239 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,147,239.
Example:
1 x 51,147,239 = 51,147,239
and
-1 x -51,147,239 = 51,147,239
Notice both answers equal 51,147,239
With that explanation out of the way, let's continue. Next, we take the number 51,147,239 and divide it by 2:
51,147,239 ÷ 2 = 25,573,619.5
If the quotient is a whole number, then 2 and 25,573,619.5 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 | 51,147,239 | |
| -1 | -51,147,239 |
Now, we try dividing 51,147,239 by 3:
51,147,239 ÷ 3 = 17,049,079.6667
If the quotient is a whole number, then 3 and 17,049,079.6667 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 | 51,147,239 | |
| -1 | -51,147,239 |
Let's try dividing by 4:
51,147,239 ÷ 4 = 12,786,809.75
If the quotient is a whole number, then 4 and 12,786,809.75 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 | 51,147,239 | |
| -1 | 51,147,239 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 23 | 143 | 253 | 299 | 3,289 | 15,551 | 171,061 | 202,163 | 357,673 | 2,223,793 | 3,934,403 | 4,649,749 | 51,147,239 |
| -1 | -11 | -13 | -23 | -143 | -253 | -299 | -3,289 | -15,551 | -171,061 | -202,163 | -357,673 | -2,223,793 | -3,934,403 | -4,649,749 | -51,147,239 |
Here are some more numbers to try:
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