A:
Positive:
1 x 4781477477 x 6830682111 x 4346797777 x 6209711859 x 5566336013 x 795197229 x 661439449 x 50603
Negative:
-1 x -478147747-7 x -68306821-11 x -43467977-77 x -6209711-859 x -556633-6013 x -79519-7229 x -66143-9449 x -50603
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 478,147,747, 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 | 478,147,747 | |
| -1 | -478,147,747 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 478,147,747.
Example:
1 x 478,147,747 = 478,147,747
and
-1 x -478,147,747 = 478,147,747
Notice both answers equal 478,147,747
With that explanation out of the way, let's continue. Next, we take the number 478,147,747 and divide it by 2:
478,147,747 ÷ 2 = 239,073,873.5
If the quotient is a whole number, then 2 and 239,073,873.5 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 | 478,147,747 | |
| -1 | -478,147,747 |
Now, we try dividing 478,147,747 by 3:
478,147,747 ÷ 3 = 159,382,582.3333
If the quotient is a whole number, then 3 and 159,382,582.3333 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 | 478,147,747 | |
| -1 | -478,147,747 |
Let's try dividing by 4:
478,147,747 ÷ 4 = 119,536,936.75
If the quotient is a whole number, then 4 and 119,536,936.75 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 | 478,147,747 | |
| -1 | 478,147,747 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 859 | 6,013 | 7,229 | 9,449 | 50,603 | 66,143 | 79,519 | 556,633 | 6,209,711 | 43,467,977 | 68,306,821 | 478,147,747 |
| -1 | -7 | -11 | -77 | -859 | -6,013 | -7,229 | -9,449 | -50,603 | -66,143 | -79,519 | -556,633 | -6,209,711 | -43,467,977 | -68,306,821 | -478,147,747 |
Here are some more numbers to try:
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