A:
Positive:
1 x 721627555 x 144325517 x 1030896535 x 2061793
Negative:
-1 x -72162755-5 x -14432551-7 x -10308965-35 x -2061793
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 72,162,755, 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 | 72,162,755 | |
| -1 | -72,162,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,162,755.
Example:
1 x 72,162,755 = 72,162,755
and
-1 x -72,162,755 = 72,162,755
Notice both answers equal 72,162,755
With that explanation out of the way, let's continue. Next, we take the number 72,162,755 and divide it by 2:
72,162,755 ÷ 2 = 36,081,377.5
If the quotient is a whole number, then 2 and 36,081,377.5 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 | 72,162,755 | |
| -1 | -72,162,755 |
Now, we try dividing 72,162,755 by 3:
72,162,755 ÷ 3 = 24,054,251.6667
If the quotient is a whole number, then 3 and 24,054,251.6667 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 | 72,162,755 | |
| -1 | -72,162,755 |
Let's try dividing by 4:
72,162,755 ÷ 4 = 18,040,688.75
If the quotient is a whole number, then 4 and 18,040,688.75 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 | 72,162,755 | |
| -1 | 72,162,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 2,061,793 | 10,308,965 | 14,432,551 | 72,162,755 |
| -1 | -5 | -7 | -35 | -2,061,793 | -10,308,965 | -14,432,551 | -72,162,755 |
Here are some more numbers to try:
Try the factor calculator