A:
Positive:
1 x 1201915317 x 70700919 x 632587127 x 94639293 x 41021323 x 372112159 x 55672413 x 4981
Negative:
-1 x -12019153-17 x -707009-19 x -632587-127 x -94639-293 x -41021-323 x -37211-2159 x -5567-2413 x -4981
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 12,019,153, 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 | 12,019,153 | |
| -1 | -12,019,153 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,019,153.
Example:
1 x 12,019,153 = 12,019,153
and
-1 x -12,019,153 = 12,019,153
Notice both answers equal 12,019,153
With that explanation out of the way, let's continue. Next, we take the number 12,019,153 and divide it by 2:
12,019,153 ÷ 2 = 6,009,576.5
If the quotient is a whole number, then 2 and 6,009,576.5 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 | 12,019,153 | |
| -1 | -12,019,153 |
Now, we try dividing 12,019,153 by 3:
12,019,153 ÷ 3 = 4,006,384.3333
If the quotient is a whole number, then 3 and 4,006,384.3333 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 | 12,019,153 | |
| -1 | -12,019,153 |
Let's try dividing by 4:
12,019,153 ÷ 4 = 3,004,788.25
If the quotient is a whole number, then 4 and 3,004,788.25 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 | 12,019,153 | |
| -1 | 12,019,153 |
If you did it right, you will end up with this table:
| 1 | 17 | 19 | 127 | 293 | 323 | 2,159 | 2,413 | 4,981 | 5,567 | 37,211 | 41,021 | 94,639 | 632,587 | 707,009 | 12,019,153 |
| -1 | -17 | -19 | -127 | -293 | -323 | -2,159 | -2,413 | -4,981 | -5,567 | -37,211 | -41,021 | -94,639 | -632,587 | -707,009 | -12,019,153 |
Here are some more numbers to try:
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