A:
Positive:
1 x 775132855 x 1550265717 x 455960583 x 93389585 x 911921415 x 1867791411 x 549357055 x 10987
Negative:
-1 x -77513285-5 x -15502657-17 x -4559605-83 x -933895-85 x -911921-415 x -186779-1411 x -54935-7055 x -10987
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 77,513,285, 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 | 77,513,285 | |
| -1 | -77,513,285 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,513,285.
Example:
1 x 77,513,285 = 77,513,285
and
-1 x -77,513,285 = 77,513,285
Notice both answers equal 77,513,285
With that explanation out of the way, let's continue. Next, we take the number 77,513,285 and divide it by 2:
77,513,285 ÷ 2 = 38,756,642.5
If the quotient is a whole number, then 2 and 38,756,642.5 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 | 77,513,285 | |
| -1 | -77,513,285 |
Now, we try dividing 77,513,285 by 3:
77,513,285 ÷ 3 = 25,837,761.6667
If the quotient is a whole number, then 3 and 25,837,761.6667 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 | 77,513,285 | |
| -1 | -77,513,285 |
Let's try dividing by 4:
77,513,285 ÷ 4 = 19,378,321.25
If the quotient is a whole number, then 4 and 19,378,321.25 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 | 77,513,285 | |
| -1 | 77,513,285 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 83 | 85 | 415 | 1,411 | 7,055 | 10,987 | 54,935 | 186,779 | 911,921 | 933,895 | 4,559,605 | 15,502,657 | 77,513,285 |
| -1 | -5 | -17 | -83 | -85 | -415 | -1,411 | -7,055 | -10,987 | -54,935 | -186,779 | -911,921 | -933,895 | -4,559,605 | -15,502,657 | -77,513,285 |
Here are some more numbers to try:
Try the factor calculator