A:
Positive:
1 x 1724407555 x 3448815131 x 5562605155 x 1112521293 x 5885351465 x 1177073797 x 454159083 x 18985
Negative:
-1 x -172440755-5 x -34488151-31 x -5562605-155 x -1112521-293 x -588535-1465 x -117707-3797 x -45415-9083 x -18985
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 172,440,755, 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 | 172,440,755 | |
| -1 | -172,440,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 172,440,755.
Example:
1 x 172,440,755 = 172,440,755
and
-1 x -172,440,755 = 172,440,755
Notice both answers equal 172,440,755
With that explanation out of the way, let's continue. Next, we take the number 172,440,755 and divide it by 2:
172,440,755 ÷ 2 = 86,220,377.5
If the quotient is a whole number, then 2 and 86,220,377.5 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 | 172,440,755 | |
| -1 | -172,440,755 |
Now, we try dividing 172,440,755 by 3:
172,440,755 ÷ 3 = 57,480,251.6667
If the quotient is a whole number, then 3 and 57,480,251.6667 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 | 172,440,755 | |
| -1 | -172,440,755 |
Let's try dividing by 4:
172,440,755 ÷ 4 = 43,110,188.75
If the quotient is a whole number, then 4 and 43,110,188.75 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 | 172,440,755 | |
| -1 | 172,440,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 293 | 1,465 | 3,797 | 9,083 | 18,985 | 45,415 | 117,707 | 588,535 | 1,112,521 | 5,562,605 | 34,488,151 | 172,440,755 |
| -1 | -5 | -31 | -155 | -293 | -1,465 | -3,797 | -9,083 | -18,985 | -45,415 | -117,707 | -588,535 | -1,112,521 | -5,562,605 | -34,488,151 | -172,440,755 |
Here are some more numbers to try:
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