A:
Positive:
1 x 770667555 x 1541335119 x 405614595 x 811229659 x 1169451231 x 626053295 x 233896155 x 12521
Negative:
-1 x -77066755-5 x -15413351-19 x -4056145-95 x -811229-659 x -116945-1231 x -62605-3295 x -23389-6155 x -12521
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 77,066,755, 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 | 77,066,755 | |
| -1 | -77,066,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,066,755.
Example:
1 x 77,066,755 = 77,066,755
and
-1 x -77,066,755 = 77,066,755
Notice both answers equal 77,066,755
With that explanation out of the way, let's continue. Next, we take the number 77,066,755 and divide it by 2:
77,066,755 ÷ 2 = 38,533,377.5
If the quotient is a whole number, then 2 and 38,533,377.5 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 | 77,066,755 | |
| -1 | -77,066,755 |
Now, we try dividing 77,066,755 by 3:
77,066,755 ÷ 3 = 25,688,918.3333
If the quotient is a whole number, then 3 and 25,688,918.3333 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 | 77,066,755 | |
| -1 | -77,066,755 |
Let's try dividing by 4:
77,066,755 ÷ 4 = 19,266,688.75
If the quotient is a whole number, then 4 and 19,266,688.75 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 | 77,066,755 | |
| -1 | 77,066,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 659 | 1,231 | 3,295 | 6,155 | 12,521 | 23,389 | 62,605 | 116,945 | 811,229 | 4,056,145 | 15,413,351 | 77,066,755 |
| -1 | -5 | -19 | -95 | -659 | -1,231 | -3,295 | -6,155 | -12,521 | -23,389 | -62,605 | -116,945 | -811,229 | -4,056,145 | -15,413,351 | -77,066,755 |
Here are some more numbers to try:
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