A:
Positive:
1 x 177527217 x 253610353 x 334957109 x 162869371 x 47851439 x 40439763 x 232673073 x 5777
Negative:
-1 x -17752721-7 x -2536103-53 x -334957-109 x -162869-371 x -47851-439 x -40439-763 x -23267-3073 x -5777
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 17,752,721, 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 | 17,752,721 | |
| -1 | -17,752,721 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,752,721.
Example:
1 x 17,752,721 = 17,752,721
and
-1 x -17,752,721 = 17,752,721
Notice both answers equal 17,752,721
With that explanation out of the way, let's continue. Next, we take the number 17,752,721 and divide it by 2:
17,752,721 ÷ 2 = 8,876,360.5
If the quotient is a whole number, then 2 and 8,876,360.5 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 | 17,752,721 | |
| -1 | -17,752,721 |
Now, we try dividing 17,752,721 by 3:
17,752,721 ÷ 3 = 5,917,573.6667
If the quotient is a whole number, then 3 and 5,917,573.6667 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 | 17,752,721 | |
| -1 | -17,752,721 |
Let's try dividing by 4:
17,752,721 ÷ 4 = 4,438,180.25
If the quotient is a whole number, then 4 and 4,438,180.25 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 | 17,752,721 | |
| -1 | 17,752,721 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 109 | 371 | 439 | 763 | 3,073 | 5,777 | 23,267 | 40,439 | 47,851 | 162,869 | 334,957 | 2,536,103 | 17,752,721 |
| -1 | -7 | -53 | -109 | -371 | -439 | -763 | -3,073 | -5,777 | -23,267 | -40,439 | -47,851 | -162,869 | -334,957 | -2,536,103 | -17,752,721 |
Here are some more numbers to try:
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