A:
Positive:
1 x 72870983149 x 489067233 x 3127512099 x 34717
Negative:
-1 x -72870983-149 x -489067-233 x -312751-2099 x -34717
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 72,870,983, 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 | 72,870,983 | |
| -1 | -72,870,983 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,870,983.
Example:
1 x 72,870,983 = 72,870,983
and
-1 x -72,870,983 = 72,870,983
Notice both answers equal 72,870,983
With that explanation out of the way, let's continue. Next, we take the number 72,870,983 and divide it by 2:
72,870,983 ÷ 2 = 36,435,491.5
If the quotient is a whole number, then 2 and 36,435,491.5 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 | 72,870,983 | |
| -1 | -72,870,983 |
Now, we try dividing 72,870,983 by 3:
72,870,983 ÷ 3 = 24,290,327.6667
If the quotient is a whole number, then 3 and 24,290,327.6667 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 | 72,870,983 | |
| -1 | -72,870,983 |
Let's try dividing by 4:
72,870,983 ÷ 4 = 18,217,745.75
If the quotient is a whole number, then 4 and 18,217,745.75 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 | 72,870,983 | |
| -1 | 72,870,983 |
If you did it right, you will end up with this table:
| 1 | 149 | 233 | 2,099 | 34,717 | 312,751 | 489,067 | 72,870,983 |
| -1 | -149 | -233 | -2,099 | -34,717 | -312,751 | -489,067 | -72,870,983 |
Here are some more numbers to try:
Try the factor calculator