A:
Positive:
1 x 6655725237 x 9508178911 x 6050659377 x 86437991601 x 4157235399 x 12327711207 x 5938917611 x 37793
Negative:
-1 x -665572523-7 x -95081789-11 x -60506593-77 x -8643799-1601 x -415723-5399 x -123277-11207 x -59389-17611 x -37793
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 665,572,523, 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 | 665,572,523 | |
| -1 | -665,572,523 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 665,572,523.
Example:
1 x 665,572,523 = 665,572,523
and
-1 x -665,572,523 = 665,572,523
Notice both answers equal 665,572,523
With that explanation out of the way, let's continue. Next, we take the number 665,572,523 and divide it by 2:
665,572,523 ÷ 2 = 332,786,261.5
If the quotient is a whole number, then 2 and 332,786,261.5 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 | 665,572,523 | |
| -1 | -665,572,523 |
Now, we try dividing 665,572,523 by 3:
665,572,523 ÷ 3 = 221,857,507.6667
If the quotient is a whole number, then 3 and 221,857,507.6667 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 | 665,572,523 | |
| -1 | -665,572,523 |
Let's try dividing by 4:
665,572,523 ÷ 4 = 166,393,130.75
If the quotient is a whole number, then 4 and 166,393,130.75 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 | 665,572,523 | |
| -1 | 665,572,523 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 1,601 | 5,399 | 11,207 | 17,611 | 37,793 | 59,389 | 123,277 | 415,723 | 8,643,799 | 60,506,593 | 95,081,789 | 665,572,523 |
| -1 | -7 | -11 | -77 | -1,601 | -5,399 | -11,207 | -17,611 | -37,793 | -59,389 | -123,277 | -415,723 | -8,643,799 | -60,506,593 | -95,081,789 | -665,572,523 |
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