A:
Positive:
1 x 420785355 x 84157071553 x 270955419 x 7765
Negative:
-1 x -42078535-5 x -8415707-1553 x -27095-5419 x -7765
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 42,078,535, 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 | 42,078,535 | |
| -1 | -42,078,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,078,535.
Example:
1 x 42,078,535 = 42,078,535
and
-1 x -42,078,535 = 42,078,535
Notice both answers equal 42,078,535
With that explanation out of the way, let's continue. Next, we take the number 42,078,535 and divide it by 2:
42,078,535 ÷ 2 = 21,039,267.5
If the quotient is a whole number, then 2 and 21,039,267.5 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 | 42,078,535 | |
| -1 | -42,078,535 |
Now, we try dividing 42,078,535 by 3:
42,078,535 ÷ 3 = 14,026,178.3333
If the quotient is a whole number, then 3 and 14,026,178.3333 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 | 42,078,535 | |
| -1 | -42,078,535 |
Let's try dividing by 4:
42,078,535 ÷ 4 = 10,519,633.75
If the quotient is a whole number, then 4 and 10,519,633.75 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 | 42,078,535 | |
| -1 | 42,078,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 1,553 | 5,419 | 7,765 | 27,095 | 8,415,707 | 42,078,535 |
| -1 | -5 | -1,553 | -5,419 | -7,765 | -27,095 | -8,415,707 | -42,078,535 |
Here are some more numbers to try:
Try the factor calculator