A:
Positive:
1 x 381128155 x 762256313 x 293175529 x 131423565 x 586351145 x 262847377 x 1010951885 x 20219
Negative:
-1 x -38112815-5 x -7622563-13 x -2931755-29 x -1314235-65 x -586351-145 x -262847-377 x -101095-1885 x -20219
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 38,112,815, 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 | 38,112,815 | |
| -1 | -38,112,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,112,815.
Example:
1 x 38,112,815 = 38,112,815
and
-1 x -38,112,815 = 38,112,815
Notice both answers equal 38,112,815
With that explanation out of the way, let's continue. Next, we take the number 38,112,815 and divide it by 2:
38,112,815 ÷ 2 = 19,056,407.5
If the quotient is a whole number, then 2 and 19,056,407.5 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 | 38,112,815 | |
| -1 | -38,112,815 |
Now, we try dividing 38,112,815 by 3:
38,112,815 ÷ 3 = 12,704,271.6667
If the quotient is a whole number, then 3 and 12,704,271.6667 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 | 38,112,815 | |
| -1 | -38,112,815 |
Let's try dividing by 4:
38,112,815 ÷ 4 = 9,528,203.75
If the quotient is a whole number, then 4 and 9,528,203.75 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 | 38,112,815 | |
| -1 | 38,112,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 29 | 65 | 145 | 377 | 1,885 | 20,219 | 101,095 | 262,847 | 586,351 | 1,314,235 | 2,931,755 | 7,622,563 | 38,112,815 |
| -1 | -5 | -13 | -29 | -65 | -145 | -377 | -1,885 | -20,219 | -101,095 | -262,847 | -586,351 | -1,314,235 | -2,931,755 | -7,622,563 | -38,112,815 |
Here are some more numbers to try:
Try the factor calculator