A:
Positive:
1 x 7617765655 x 15235531311 x 6925241555 x 13850483179 x 4255735895 x 8511471969 x 3868859845 x 77377
Negative:
-1 x -761776565-5 x -152355313-11 x -69252415-55 x -13850483-179 x -4255735-895 x -851147-1969 x -386885-9845 x -77377
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 761,776,565, 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 | 761,776,565 | |
| -1 | -761,776,565 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 761,776,565.
Example:
1 x 761,776,565 = 761,776,565
and
-1 x -761,776,565 = 761,776,565
Notice both answers equal 761,776,565
With that explanation out of the way, let's continue. Next, we take the number 761,776,565 and divide it by 2:
761,776,565 ÷ 2 = 380,888,282.5
If the quotient is a whole number, then 2 and 380,888,282.5 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 | 761,776,565 | |
| -1 | -761,776,565 |
Now, we try dividing 761,776,565 by 3:
761,776,565 ÷ 3 = 253,925,521.6667
If the quotient is a whole number, then 3 and 253,925,521.6667 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 | 761,776,565 | |
| -1 | -761,776,565 |
Let's try dividing by 4:
761,776,565 ÷ 4 = 190,444,141.25
If the quotient is a whole number, then 4 and 190,444,141.25 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 | 761,776,565 | |
| -1 | 761,776,565 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 179 | 895 | 1,969 | 9,845 | 77,377 | 386,885 | 851,147 | 4,255,735 | 13,850,483 | 69,252,415 | 152,355,313 | 761,776,565 |
| -1 | -5 | -11 | -55 | -179 | -895 | -1,969 | -9,845 | -77,377 | -386,885 | -851,147 | -4,255,735 | -13,850,483 | -69,252,415 | -152,355,313 | -761,776,565 |
Here are some more numbers to try:
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