A:
Positive:
1 x 723416655 x 1446833311 x 657651555 x 1315303109 x 663685121 x 597865545 x 132737605 x 1195731097 x 659451199 x 603355485 x 131895995 x 12067
Negative:
-1 x -72341665-5 x -14468333-11 x -6576515-55 x -1315303-109 x -663685-121 x -597865-545 x -132737-605 x -119573-1097 x -65945-1199 x -60335-5485 x -13189-5995 x -12067
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 72,341,665, 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 | 72,341,665 | |
| -1 | -72,341,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,341,665.
Example:
1 x 72,341,665 = 72,341,665
and
-1 x -72,341,665 = 72,341,665
Notice both answers equal 72,341,665
With that explanation out of the way, let's continue. Next, we take the number 72,341,665 and divide it by 2:
72,341,665 ÷ 2 = 36,170,832.5
If the quotient is a whole number, then 2 and 36,170,832.5 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 | 72,341,665 | |
| -1 | -72,341,665 |
Now, we try dividing 72,341,665 by 3:
72,341,665 ÷ 3 = 24,113,888.3333
If the quotient is a whole number, then 3 and 24,113,888.3333 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 | 72,341,665 | |
| -1 | -72,341,665 |
Let's try dividing by 4:
72,341,665 ÷ 4 = 18,085,416.25
If the quotient is a whole number, then 4 and 18,085,416.25 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 | 72,341,665 | |
| -1 | 72,341,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 109 | 121 | 545 | 605 | 1,097 | 1,199 | 5,485 | 5,995 | 12,067 | 13,189 | 60,335 | 65,945 | 119,573 | 132,737 | 597,865 | 663,685 | 1,315,303 | 6,576,515 | 14,468,333 | 72,341,665 |
| -1 | -5 | -11 | -55 | -109 | -121 | -545 | -605 | -1,097 | -1,199 | -5,485 | -5,995 | -12,067 | -13,189 | -60,335 | -65,945 | -119,573 | -132,737 | -597,865 | -663,685 | -1,315,303 | -6,576,515 | -14,468,333 | -72,341,665 |
Here are some more numbers to try:
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