A:
Positive:
1 x 172174317 x 245963311 x 156522131 x 55540177 x 223603217 x 79343341 x 504912387 x 7213
Negative:
-1 x -17217431-7 x -2459633-11 x -1565221-31 x -555401-77 x -223603-217 x -79343-341 x -50491-2387 x -7213
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 17,217,431, 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 | 17,217,431 | |
| -1 | -17,217,431 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,217,431.
Example:
1 x 17,217,431 = 17,217,431
and
-1 x -17,217,431 = 17,217,431
Notice both answers equal 17,217,431
With that explanation out of the way, let's continue. Next, we take the number 17,217,431 and divide it by 2:
17,217,431 ÷ 2 = 8,608,715.5
If the quotient is a whole number, then 2 and 8,608,715.5 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 | 17,217,431 | |
| -1 | -17,217,431 |
Now, we try dividing 17,217,431 by 3:
17,217,431 ÷ 3 = 5,739,143.6667
If the quotient is a whole number, then 3 and 5,739,143.6667 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 | 17,217,431 | |
| -1 | -17,217,431 |
Let's try dividing by 4:
17,217,431 ÷ 4 = 4,304,357.75
If the quotient is a whole number, then 4 and 4,304,357.75 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 | 17,217,431 | |
| -1 | 17,217,431 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 31 | 77 | 217 | 341 | 2,387 | 7,213 | 50,491 | 79,343 | 223,603 | 555,401 | 1,565,221 | 2,459,633 | 17,217,431 |
| -1 | -7 | -11 | -31 | -77 | -217 | -341 | -2,387 | -7,213 | -50,491 | -79,343 | -223,603 | -555,401 | -1,565,221 | -2,459,633 | -17,217,431 |
Here are some more numbers to try:
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