A:
Positive:
1 x 380207755 x 760415513 x 292467525 x 152083165 x 584935169 x 224975325 x 116987845 x 449954225 x 8999
Negative:
-1 x -38020775-5 x -7604155-13 x -2924675-25 x -1520831-65 x -584935-169 x -224975-325 x -116987-845 x -44995-4225 x -8999
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 38,020,775, 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 | 38,020,775 | |
| -1 | -38,020,775 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,020,775.
Example:
1 x 38,020,775 = 38,020,775
and
-1 x -38,020,775 = 38,020,775
Notice both answers equal 38,020,775
With that explanation out of the way, let's continue. Next, we take the number 38,020,775 and divide it by 2:
38,020,775 ÷ 2 = 19,010,387.5
If the quotient is a whole number, then 2 and 19,010,387.5 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 | 38,020,775 | |
| -1 | -38,020,775 |
Now, we try dividing 38,020,775 by 3:
38,020,775 ÷ 3 = 12,673,591.6667
If the quotient is a whole number, then 3 and 12,673,591.6667 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 | 38,020,775 | |
| -1 | -38,020,775 |
Let's try dividing by 4:
38,020,775 ÷ 4 = 9,505,193.75
If the quotient is a whole number, then 4 and 9,505,193.75 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 | 38,020,775 | |
| -1 | 38,020,775 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 25 | 65 | 169 | 325 | 845 | 4,225 | 8,999 | 44,995 | 116,987 | 224,975 | 584,935 | 1,520,831 | 2,924,675 | 7,604,155 | 38,020,775 |
| -1 | -5 | -13 | -25 | -65 | -169 | -325 | -845 | -4,225 | -8,999 | -44,995 | -116,987 | -224,975 | -584,935 | -1,520,831 | -2,924,675 | -7,604,155 | -38,020,775 |
Here are some more numbers to try:
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