A:
Positive:
1 x 1216228129 x 41938941 x 29664153 x 229477193 x 630171189 x 102291537 x 79132173 x 5597
Negative:
-1 x -12162281-29 x -419389-41 x -296641-53 x -229477-193 x -63017-1189 x -10229-1537 x -7913-2173 x -5597
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 12,162,281, 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 | 12,162,281 | |
| -1 | -12,162,281 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,162,281.
Example:
1 x 12,162,281 = 12,162,281
and
-1 x -12,162,281 = 12,162,281
Notice both answers equal 12,162,281
With that explanation out of the way, let's continue. Next, we take the number 12,162,281 and divide it by 2:
12,162,281 ÷ 2 = 6,081,140.5
If the quotient is a whole number, then 2 and 6,081,140.5 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 | 12,162,281 | |
| -1 | -12,162,281 |
Now, we try dividing 12,162,281 by 3:
12,162,281 ÷ 3 = 4,054,093.6667
If the quotient is a whole number, then 3 and 4,054,093.6667 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 | 12,162,281 | |
| -1 | -12,162,281 |
Let's try dividing by 4:
12,162,281 ÷ 4 = 3,040,570.25
If the quotient is a whole number, then 4 and 3,040,570.25 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 | 12,162,281 | |
| -1 | 12,162,281 |
If you did it right, you will end up with this table:
| 1 | 29 | 41 | 53 | 193 | 1,189 | 1,537 | 2,173 | 5,597 | 7,913 | 10,229 | 63,017 | 229,477 | 296,641 | 419,389 | 12,162,281 |
| -1 | -29 | -41 | -53 | -193 | -1,189 | -1,537 | -2,173 | -5,597 | -7,913 | -10,229 | -63,017 | -229,477 | -296,641 | -419,389 | -12,162,281 |
Here are some more numbers to try:
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