A:
Positive:
1 x 1264414117 x 74377361 x 20728189 x 142069137 x 922931037 x 121931513 x 83572329 x 5429
Negative:
-1 x -12644141-17 x -743773-61 x -207281-89 x -142069-137 x -92293-1037 x -12193-1513 x -8357-2329 x -5429
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 12,644,141, 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 | 12,644,141 | |
| -1 | -12,644,141 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,644,141.
Example:
1 x 12,644,141 = 12,644,141
and
-1 x -12,644,141 = 12,644,141
Notice both answers equal 12,644,141
With that explanation out of the way, let's continue. Next, we take the number 12,644,141 and divide it by 2:
12,644,141 ÷ 2 = 6,322,070.5
If the quotient is a whole number, then 2 and 6,322,070.5 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 | 12,644,141 | |
| -1 | -12,644,141 |
Now, we try dividing 12,644,141 by 3:
12,644,141 ÷ 3 = 4,214,713.6667
If the quotient is a whole number, then 3 and 4,214,713.6667 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 | 12,644,141 | |
| -1 | -12,644,141 |
Let's try dividing by 4:
12,644,141 ÷ 4 = 3,161,035.25
If the quotient is a whole number, then 4 and 3,161,035.25 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 | 12,644,141 | |
| -1 | 12,644,141 |
If you did it right, you will end up with this table:
| 1 | 17 | 61 | 89 | 137 | 1,037 | 1,513 | 2,329 | 5,429 | 8,357 | 12,193 | 92,293 | 142,069 | 207,281 | 743,773 | 12,644,141 |
| -1 | -17 | -61 | -89 | -137 | -1,037 | -1,513 | -2,329 | -5,429 | -8,357 | -12,193 | -92,293 | -142,069 | -207,281 | -743,773 | -12,644,141 |
Here are some more numbers to try:
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