A:
Positive:
1 x 1827862311 x 166169331 x 589633121 x 151063341 x 53603443 x 412611331 x 137333751 x 4873
Negative:
-1 x -18278623-11 x -1661693-31 x -589633-121 x -151063-341 x -53603-443 x -41261-1331 x -13733-3751 x -4873
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 18,278,623, 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 | 18,278,623 | |
| -1 | -18,278,623 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,278,623.
Example:
1 x 18,278,623 = 18,278,623
and
-1 x -18,278,623 = 18,278,623
Notice both answers equal 18,278,623
With that explanation out of the way, let's continue. Next, we take the number 18,278,623 and divide it by 2:
18,278,623 ÷ 2 = 9,139,311.5
If the quotient is a whole number, then 2 and 9,139,311.5 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 | 18,278,623 | |
| -1 | -18,278,623 |
Now, we try dividing 18,278,623 by 3:
18,278,623 ÷ 3 = 6,092,874.3333
If the quotient is a whole number, then 3 and 6,092,874.3333 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 | 18,278,623 | |
| -1 | -18,278,623 |
Let's try dividing by 4:
18,278,623 ÷ 4 = 4,569,655.75
If the quotient is a whole number, then 4 and 4,569,655.75 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 | 18,278,623 | |
| -1 | 18,278,623 |
If you did it right, you will end up with this table:
| 1 | 11 | 31 | 121 | 341 | 443 | 1,331 | 3,751 | 4,873 | 13,733 | 41,261 | 53,603 | 151,063 | 589,633 | 1,661,693 | 18,278,623 |
| -1 | -11 | -31 | -121 | -341 | -443 | -1,331 | -3,751 | -4,873 | -13,733 | -41,261 | -53,603 | -151,063 | -589,633 | -1,661,693 | -18,278,623 |
Here are some more numbers to try:
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