A:
Positive:
1 x 7127711655 x 142554233109 x 6539185359 x 1985435545 x 13078371795 x 3970873643 x 19565518215 x 39131
Negative:
-1 x -712771165-5 x -142554233-109 x -6539185-359 x -1985435-545 x -1307837-1795 x -397087-3643 x -195655-18215 x -39131
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 712,771,165, 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 | 712,771,165 | |
| -1 | -712,771,165 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 712,771,165.
Example:
1 x 712,771,165 = 712,771,165
and
-1 x -712,771,165 = 712,771,165
Notice both answers equal 712,771,165
With that explanation out of the way, let's continue. Next, we take the number 712,771,165 and divide it by 2:
712,771,165 ÷ 2 = 356,385,582.5
If the quotient is a whole number, then 2 and 356,385,582.5 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 | 712,771,165 | |
| -1 | -712,771,165 |
Now, we try dividing 712,771,165 by 3:
712,771,165 ÷ 3 = 237,590,388.3333
If the quotient is a whole number, then 3 and 237,590,388.3333 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 | 712,771,165 | |
| -1 | -712,771,165 |
Let's try dividing by 4:
712,771,165 ÷ 4 = 178,192,791.25
If the quotient is a whole number, then 4 and 178,192,791.25 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 | 712,771,165 | |
| -1 | 712,771,165 |
If you did it right, you will end up with this table:
| 1 | 5 | 109 | 359 | 545 | 1,795 | 3,643 | 18,215 | 39,131 | 195,655 | 397,087 | 1,307,837 | 1,985,435 | 6,539,185 | 142,554,233 | 712,771,165 |
| -1 | -5 | -109 | -359 | -545 | -1,795 | -3,643 | -18,215 | -39,131 | -195,655 | -397,087 | -1,307,837 | -1,985,435 | -6,539,185 | -142,554,233 | -712,771,165 |
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