A:
Positive:
1 x 3804476655 x 7608953313 x 2926520529 x 1311888565 x 5853041145 x 2623777377 x 10091451885 x 201829
Negative:
-1 x -380447665-5 x -76089533-13 x -29265205-29 x -13118885-65 x -5853041-145 x -2623777-377 x -1009145-1885 x -201829
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 380,447,665, 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 | 380,447,665 | |
| -1 | -380,447,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 380,447,665.
Example:
1 x 380,447,665 = 380,447,665
and
-1 x -380,447,665 = 380,447,665
Notice both answers equal 380,447,665
With that explanation out of the way, let's continue. Next, we take the number 380,447,665 and divide it by 2:
380,447,665 ÷ 2 = 190,223,832.5
If the quotient is a whole number, then 2 and 190,223,832.5 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 | 380,447,665 | |
| -1 | -380,447,665 |
Now, we try dividing 380,447,665 by 3:
380,447,665 ÷ 3 = 126,815,888.3333
If the quotient is a whole number, then 3 and 126,815,888.3333 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 | 380,447,665 | |
| -1 | -380,447,665 |
Let's try dividing by 4:
380,447,665 ÷ 4 = 95,111,916.25
If the quotient is a whole number, then 4 and 95,111,916.25 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 | 380,447,665 | |
| -1 | 380,447,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 29 | 65 | 145 | 377 | 1,885 | 201,829 | 1,009,145 | 2,623,777 | 5,853,041 | 13,118,885 | 29,265,205 | 76,089,533 | 380,447,665 |
| -1 | -5 | -13 | -29 | -65 | -145 | -377 | -1,885 | -201,829 | -1,009,145 | -2,623,777 | -5,853,041 | -13,118,885 | -29,265,205 | -76,089,533 | -380,447,665 |
Here are some more numbers to try:
Try the factor calculator