A:
Positive:
1 x 7637213155 x 1527442637 x 10910304535 x 218206092207 x 3460459887 x 7724511035 x 6920915449 x 49435
Negative:
-1 x -763721315-5 x -152744263-7 x -109103045-35 x -21820609-2207 x -346045-9887 x -77245-11035 x -69209-15449 x -49435
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 763,721,315, 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 | 763,721,315 | |
| -1 | -763,721,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 763,721,315.
Example:
1 x 763,721,315 = 763,721,315
and
-1 x -763,721,315 = 763,721,315
Notice both answers equal 763,721,315
With that explanation out of the way, let's continue. Next, we take the number 763,721,315 and divide it by 2:
763,721,315 ÷ 2 = 381,860,657.5
If the quotient is a whole number, then 2 and 381,860,657.5 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 | 763,721,315 | |
| -1 | -763,721,315 |
Now, we try dividing 763,721,315 by 3:
763,721,315 ÷ 3 = 254,573,771.6667
If the quotient is a whole number, then 3 and 254,573,771.6667 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 | 763,721,315 | |
| -1 | -763,721,315 |
Let's try dividing by 4:
763,721,315 ÷ 4 = 190,930,328.75
If the quotient is a whole number, then 4 and 190,930,328.75 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 | 763,721,315 | |
| -1 | 763,721,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 2,207 | 9,887 | 11,035 | 15,449 | 49,435 | 69,209 | 77,245 | 346,045 | 21,820,609 | 109,103,045 | 152,744,263 | 763,721,315 |
| -1 | -5 | -7 | -35 | -2,207 | -9,887 | -11,035 | -15,449 | -49,435 | -69,209 | -77,245 | -346,045 | -21,820,609 | -109,103,045 | -152,744,263 | -763,721,315 |
Here are some more numbers to try:
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