A:
Positive:
1 x 1292302255 x 2584604525 x 516920989 x 1452025241 x 536225445 x 2904051205 x 1072452225 x 580816025 x 21449
Negative:
-1 x -129230225-5 x -25846045-25 x -5169209-89 x -1452025-241 x -536225-445 x -290405-1205 x -107245-2225 x -58081-6025 x -21449
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 129,230,225, 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 | 129,230,225 | |
| -1 | -129,230,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 129,230,225.
Example:
1 x 129,230,225 = 129,230,225
and
-1 x -129,230,225 = 129,230,225
Notice both answers equal 129,230,225
With that explanation out of the way, let's continue. Next, we take the number 129,230,225 and divide it by 2:
129,230,225 ÷ 2 = 64,615,112.5
If the quotient is a whole number, then 2 and 64,615,112.5 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 | 129,230,225 | |
| -1 | -129,230,225 |
Now, we try dividing 129,230,225 by 3:
129,230,225 ÷ 3 = 43,076,741.6667
If the quotient is a whole number, then 3 and 43,076,741.6667 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 | 129,230,225 | |
| -1 | -129,230,225 |
Let's try dividing by 4:
129,230,225 ÷ 4 = 32,307,556.25
If the quotient is a whole number, then 4 and 32,307,556.25 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 | 129,230,225 | |
| -1 | 129,230,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 89 | 241 | 445 | 1,205 | 2,225 | 6,025 | 21,449 | 58,081 | 107,245 | 290,405 | 536,225 | 1,452,025 | 5,169,209 | 25,846,045 | 129,230,225 |
| -1 | -5 | -25 | -89 | -241 | -445 | -1,205 | -2,225 | -6,025 | -21,449 | -58,081 | -107,245 | -290,405 | -536,225 | -1,452,025 | -5,169,209 | -25,846,045 | -129,230,225 |
Here are some more numbers to try:
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