A:
Positive:
1 x 727235455 x 1454470919 x 382755541 x 177374595 x 765511205 x 354749779 x 933553895 x 18671
Negative:
-1 x -72723545-5 x -14544709-19 x -3827555-41 x -1773745-95 x -765511-205 x -354749-779 x -93355-3895 x -18671
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 72,723,545, 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 | 72,723,545 | |
| -1 | -72,723,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,723,545.
Example:
1 x 72,723,545 = 72,723,545
and
-1 x -72,723,545 = 72,723,545
Notice both answers equal 72,723,545
With that explanation out of the way, let's continue. Next, we take the number 72,723,545 and divide it by 2:
72,723,545 ÷ 2 = 36,361,772.5
If the quotient is a whole number, then 2 and 36,361,772.5 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 | 72,723,545 | |
| -1 | -72,723,545 |
Now, we try dividing 72,723,545 by 3:
72,723,545 ÷ 3 = 24,241,181.6667
If the quotient is a whole number, then 3 and 24,241,181.6667 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 | 72,723,545 | |
| -1 | -72,723,545 |
Let's try dividing by 4:
72,723,545 ÷ 4 = 18,180,886.25
If the quotient is a whole number, then 4 and 18,180,886.25 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 | 72,723,545 | |
| -1 | 72,723,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 41 | 95 | 205 | 779 | 3,895 | 18,671 | 93,355 | 354,749 | 765,511 | 1,773,745 | 3,827,555 | 14,544,709 | 72,723,545 |
| -1 | -5 | -19 | -41 | -95 | -205 | -779 | -3,895 | -18,671 | -93,355 | -354,749 | -765,511 | -1,773,745 | -3,827,555 | -14,544,709 | -72,723,545 |
Here are some more numbers to try:
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