A:
Positive:
1 x 7205455 x 1441097 x 10293517 x 4238535 x 2058749 x 1470585 x 8477119 x 6055173 x 4165245 x 2941595 x 1211833 x 865
Negative:
-1 x -720545-5 x -144109-7 x -102935-17 x -42385-35 x -20587-49 x -14705-85 x -8477-119 x -6055-173 x -4165-245 x -2941-595 x -1211-833 x -865
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 720,545, 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 | 720,545 | |
| -1 | -720,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 720,545.
Example:
1 x 720,545 = 720,545
and
-1 x -720,545 = 720,545
Notice both answers equal 720,545
With that explanation out of the way, let's continue. Next, we take the number 720,545 and divide it by 2:
720,545 ÷ 2 = 360,272.5
If the quotient is a whole number, then 2 and 360,272.5 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 | 720,545 | |
| -1 | -720,545 |
Now, we try dividing 720,545 by 3:
720,545 ÷ 3 = 240,181.6667
If the quotient is a whole number, then 3 and 240,181.6667 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 | 720,545 | |
| -1 | -720,545 |
Let's try dividing by 4:
720,545 ÷ 4 = 180,136.25
If the quotient is a whole number, then 4 and 180,136.25 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 | 720,545 | |
| -1 | 720,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 17 | 35 | 49 | 85 | 119 | 173 | 245 | 595 | 833 | 865 | 1,211 | 2,941 | 4,165 | 6,055 | 8,477 | 14,705 | 20,587 | 42,385 | 102,935 | 144,109 | 720,545 |
| -1 | -5 | -7 | -17 | -35 | -49 | -85 | -119 | -173 | -245 | -595 | -833 | -865 | -1,211 | -2,941 | -4,165 | -6,055 | -8,477 | -14,705 | -20,587 | -42,385 | -102,935 | -144,109 | -720,545 |
Here are some more numbers to try:
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