A:
Positive:
1 x 7125202255 x 14250404525 x 285008091039 x 6857755195 x 13715525975 x 27431
Negative:
-1 x -712520225-5 x -142504045-25 x -28500809-1039 x -685775-5195 x -137155-25975 x -27431
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 712,520,225, 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 | 712,520,225 | |
| -1 | -712,520,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 712,520,225.
Example:
1 x 712,520,225 = 712,520,225
and
-1 x -712,520,225 = 712,520,225
Notice both answers equal 712,520,225
With that explanation out of the way, let's continue. Next, we take the number 712,520,225 and divide it by 2:
712,520,225 ÷ 2 = 356,260,112.5
If the quotient is a whole number, then 2 and 356,260,112.5 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 | 712,520,225 | |
| -1 | -712,520,225 |
Now, we try dividing 712,520,225 by 3:
712,520,225 ÷ 3 = 237,506,741.6667
If the quotient is a whole number, then 3 and 237,506,741.6667 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 | 712,520,225 | |
| -1 | -712,520,225 |
Let's try dividing by 4:
712,520,225 ÷ 4 = 178,130,056.25
If the quotient is a whole number, then 4 and 178,130,056.25 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 | 712,520,225 | |
| -1 | 712,520,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 1,039 | 5,195 | 25,975 | 27,431 | 137,155 | 685,775 | 28,500,809 | 142,504,045 | 712,520,225 |
| -1 | -5 | -25 | -1,039 | -5,195 | -25,975 | -27,431 | -137,155 | -685,775 | -28,500,809 | -142,504,045 | -712,520,225 |
Here are some more numbers to try:
Try the factor calculator