A:
Positive:
1 x 1720642255 x 3441284517 x 1012142525 x 688256961 x 282072585 x 2024285305 x 564145425 x 4048571037 x 1659251525 x 1128295185 x 331856637 x 25925
Negative:
-1 x -172064225-5 x -34412845-17 x -10121425-25 x -6882569-61 x -2820725-85 x -2024285-305 x -564145-425 x -404857-1037 x -165925-1525 x -112829-5185 x -33185-6637 x -25925
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 172,064,225, 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 | 172,064,225 | |
| -1 | -172,064,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 172,064,225.
Example:
1 x 172,064,225 = 172,064,225
and
-1 x -172,064,225 = 172,064,225
Notice both answers equal 172,064,225
With that explanation out of the way, let's continue. Next, we take the number 172,064,225 and divide it by 2:
172,064,225 ÷ 2 = 86,032,112.5
If the quotient is a whole number, then 2 and 86,032,112.5 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 | 172,064,225 | |
| -1 | -172,064,225 |
Now, we try dividing 172,064,225 by 3:
172,064,225 ÷ 3 = 57,354,741.6667
If the quotient is a whole number, then 3 and 57,354,741.6667 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 | 172,064,225 | |
| -1 | -172,064,225 |
Let's try dividing by 4:
172,064,225 ÷ 4 = 43,016,056.25
If the quotient is a whole number, then 4 and 43,016,056.25 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 | 172,064,225 | |
| -1 | 172,064,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 61 | 85 | 305 | 425 | 1,037 | 1,525 | 5,185 | 6,637 | 25,925 | 33,185 | 112,829 | 165,925 | 404,857 | 564,145 | 2,024,285 | 2,820,725 | 6,882,569 | 10,121,425 | 34,412,845 | 172,064,225 |
| -1 | -5 | -17 | -25 | -61 | -85 | -305 | -425 | -1,037 | -1,525 | -5,185 | -6,637 | -25,925 | -33,185 | -112,829 | -165,925 | -404,857 | -564,145 | -2,024,285 | -2,820,725 | -6,882,569 | -10,121,425 | -34,412,845 | -172,064,225 |
Here are some more numbers to try:
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