A:
Positive:
1 x 8161455 x 16322911 x 7419519 x 4295555 x 1483971 x 1149595 x 8591121 x 6745209 x 3905355 x 2299605 x 1349781 x 1045
Negative:
-1 x -816145-5 x -163229-11 x -74195-19 x -42955-55 x -14839-71 x -11495-95 x -8591-121 x -6745-209 x -3905-355 x -2299-605 x -1349-781 x -1045
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 816,145, 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 | 816,145 | |
| -1 | -816,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 816,145.
Example:
1 x 816,145 = 816,145
and
-1 x -816,145 = 816,145
Notice both answers equal 816,145
With that explanation out of the way, let's continue. Next, we take the number 816,145 and divide it by 2:
816,145 ÷ 2 = 408,072.5
If the quotient is a whole number, then 2 and 408,072.5 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 | 816,145 | |
| -1 | -816,145 |
Now, we try dividing 816,145 by 3:
816,145 ÷ 3 = 272,048.3333
If the quotient is a whole number, then 3 and 272,048.3333 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 | 816,145 | |
| -1 | -816,145 |
Let's try dividing by 4:
816,145 ÷ 4 = 204,036.25
If the quotient is a whole number, then 4 and 204,036.25 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 | 816,145 | |
| -1 | 816,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 71 | 95 | 121 | 209 | 355 | 605 | 781 | 1,045 | 1,349 | 2,299 | 3,905 | 6,745 | 8,591 | 11,495 | 14,839 | 42,955 | 74,195 | 163,229 | 816,145 |
| -1 | -5 | -11 | -19 | -55 | -71 | -95 | -121 | -209 | -355 | -605 | -781 | -1,045 | -1,349 | -2,299 | -3,905 | -6,745 | -8,591 | -11,495 | -14,839 | -42,955 | -74,195 | -163,229 | -816,145 |
Here are some more numbers to try:
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