A:
Positive:
1 x 5120477455 x 10240954911 x 4654979555 x 93099591471 x 3480956329 x 809057355 x 6961916181 x 31645
Negative:
-1 x -512047745-5 x -102409549-11 x -46549795-55 x -9309959-1471 x -348095-6329 x -80905-7355 x -69619-16181 x -31645
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 512,047,745, 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 | 512,047,745 | |
| -1 | -512,047,745 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 512,047,745.
Example:
1 x 512,047,745 = 512,047,745
and
-1 x -512,047,745 = 512,047,745
Notice both answers equal 512,047,745
With that explanation out of the way, let's continue. Next, we take the number 512,047,745 and divide it by 2:
512,047,745 ÷ 2 = 256,023,872.5
If the quotient is a whole number, then 2 and 256,023,872.5 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 | 512,047,745 | |
| -1 | -512,047,745 |
Now, we try dividing 512,047,745 by 3:
512,047,745 ÷ 3 = 170,682,581.6667
If the quotient is a whole number, then 3 and 170,682,581.6667 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 | 512,047,745 | |
| -1 | -512,047,745 |
Let's try dividing by 4:
512,047,745 ÷ 4 = 128,011,936.25
If the quotient is a whole number, then 4 and 128,011,936.25 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 | 512,047,745 | |
| -1 | 512,047,745 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 1,471 | 6,329 | 7,355 | 16,181 | 31,645 | 69,619 | 80,905 | 348,095 | 9,309,959 | 46,549,795 | 102,409,549 | 512,047,745 |
| -1 | -5 | -11 | -55 | -1,471 | -6,329 | -7,355 | -16,181 | -31,645 | -69,619 | -80,905 | -348,095 | -9,309,959 | -46,549,795 | -102,409,549 | -512,047,745 |
Here are some more numbers to try:
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