A:
Positive:
1 x 7636434055 x 1527286817 x 10909191535 x 21818383167 x 4572715835 x 9145431169 x 6532455845 x 130649
Negative:
-1 x -763643405-5 x -152728681-7 x -109091915-35 x -21818383-167 x -4572715-835 x -914543-1169 x -653245-5845 x -130649
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 763,643,405, 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 | 763,643,405 | |
| -1 | -763,643,405 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 763,643,405.
Example:
1 x 763,643,405 = 763,643,405
and
-1 x -763,643,405 = 763,643,405
Notice both answers equal 763,643,405
With that explanation out of the way, let's continue. Next, we take the number 763,643,405 and divide it by 2:
763,643,405 ÷ 2 = 381,821,702.5
If the quotient is a whole number, then 2 and 381,821,702.5 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 | 763,643,405 | |
| -1 | -763,643,405 |
Now, we try dividing 763,643,405 by 3:
763,643,405 ÷ 3 = 254,547,801.6667
If the quotient is a whole number, then 3 and 254,547,801.6667 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 | 763,643,405 | |
| -1 | -763,643,405 |
Let's try dividing by 4:
763,643,405 ÷ 4 = 190,910,851.25
If the quotient is a whole number, then 4 and 190,910,851.25 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 | 763,643,405 | |
| -1 | 763,643,405 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 167 | 835 | 1,169 | 5,845 | 130,649 | 653,245 | 914,543 | 4,572,715 | 21,818,383 | 109,091,915 | 152,728,681 | 763,643,405 |
| -1 | -5 | -7 | -35 | -167 | -835 | -1,169 | -5,845 | -130,649 | -653,245 | -914,543 | -4,572,715 | -21,818,383 | -109,091,915 | -152,728,681 | -763,643,405 |
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