A:
Positive:
1 x 386905555 x 773811117 x 227591519 x 203634585 x 45518395 x 407269323 x 1197851615 x 23957
Negative:
-1 x -38690555-5 x -7738111-17 x -2275915-19 x -2036345-85 x -455183-95 x -407269-323 x -119785-1615 x -23957
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 38,690,555, 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 | 38,690,555 | |
| -1 | -38,690,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,690,555.
Example:
1 x 38,690,555 = 38,690,555
and
-1 x -38,690,555 = 38,690,555
Notice both answers equal 38,690,555
With that explanation out of the way, let's continue. Next, we take the number 38,690,555 and divide it by 2:
38,690,555 ÷ 2 = 19,345,277.5
If the quotient is a whole number, then 2 and 19,345,277.5 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 | 38,690,555 | |
| -1 | -38,690,555 |
Now, we try dividing 38,690,555 by 3:
38,690,555 ÷ 3 = 12,896,851.6667
If the quotient is a whole number, then 3 and 12,896,851.6667 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 | 38,690,555 | |
| -1 | -38,690,555 |
Let's try dividing by 4:
38,690,555 ÷ 4 = 9,672,638.75
If the quotient is a whole number, then 4 and 9,672,638.75 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 | 38,690,555 | |
| -1 | 38,690,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 19 | 85 | 95 | 323 | 1,615 | 23,957 | 119,785 | 407,269 | 455,183 | 2,036,345 | 2,275,915 | 7,738,111 | 38,690,555 |
| -1 | -5 | -17 | -19 | -85 | -95 | -323 | -1,615 | -23,957 | -119,785 | -407,269 | -455,183 | -2,036,345 | -2,275,915 | -7,738,111 | -38,690,555 |
Here are some more numbers to try:
Try the factor calculator