A:
Positive:
1 x 7721200311 x 701927371 x 1087493109 x 708367781 x 98863907 x 851291199 x 643977739 x 9977
Negative:
-1 x -77212003-11 x -7019273-71 x -1087493-109 x -708367-781 x -98863-907 x -85129-1199 x -64397-7739 x -9977
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 77,212,003, 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 | 77,212,003 | |
| -1 | -77,212,003 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 77,212,003.
Example:
1 x 77,212,003 = 77,212,003
and
-1 x -77,212,003 = 77,212,003
Notice both answers equal 77,212,003
With that explanation out of the way, let's continue. Next, we take the number 77,212,003 and divide it by 2:
77,212,003 ÷ 2 = 38,606,001.5
If the quotient is a whole number, then 2 and 38,606,001.5 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 | 77,212,003 | |
| -1 | -77,212,003 |
Now, we try dividing 77,212,003 by 3:
77,212,003 ÷ 3 = 25,737,334.3333
If the quotient is a whole number, then 3 and 25,737,334.3333 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 | 77,212,003 | |
| -1 | -77,212,003 |
Let's try dividing by 4:
77,212,003 ÷ 4 = 19,303,000.75
If the quotient is a whole number, then 4 and 19,303,000.75 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 | 77,212,003 | |
| -1 | 77,212,003 |
If you did it right, you will end up with this table:
| 1 | 11 | 71 | 109 | 781 | 907 | 1,199 | 7,739 | 9,977 | 64,397 | 85,129 | 98,863 | 708,367 | 1,087,493 | 7,019,273 | 77,212,003 |
| -1 | -11 | -71 | -109 | -781 | -907 | -1,199 | -7,739 | -9,977 | -64,397 | -85,129 | -98,863 | -708,367 | -1,087,493 | -7,019,273 | -77,212,003 |
Here are some more numbers to try:
Try the factor calculator