A:
Positive:
1 x 30121917 x 43031313 x 23170779 x 3812991 x 33101419 x 7189553 x 54471027 x 2933
Negative:
-1 x -3012191-7 x -430313-13 x -231707-79 x -38129-91 x -33101-419 x -7189-553 x -5447-1027 x -2933
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 3,012,191, 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 | 3,012,191 | |
| -1 | -3,012,191 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,012,191.
Example:
1 x 3,012,191 = 3,012,191
and
-1 x -3,012,191 = 3,012,191
Notice both answers equal 3,012,191
With that explanation out of the way, let's continue. Next, we take the number 3,012,191 and divide it by 2:
3,012,191 ÷ 2 = 1,506,095.5
If the quotient is a whole number, then 2 and 1,506,095.5 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 | 3,012,191 | |
| -1 | -3,012,191 |
Now, we try dividing 3,012,191 by 3:
3,012,191 ÷ 3 = 1,004,063.6667
If the quotient is a whole number, then 3 and 1,004,063.6667 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 | 3,012,191 | |
| -1 | -3,012,191 |
Let's try dividing by 4:
3,012,191 ÷ 4 = 753,047.75
If the quotient is a whole number, then 4 and 753,047.75 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 | 3,012,191 | |
| -1 | 3,012,191 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 79 | 91 | 419 | 553 | 1,027 | 2,933 | 5,447 | 7,189 | 33,101 | 38,129 | 231,707 | 430,313 | 3,012,191 |
| -1 | -7 | -13 | -79 | -91 | -419 | -553 | -1,027 | -2,933 | -5,447 | -7,189 | -33,101 | -38,129 | -231,707 | -430,313 | -3,012,191 |
Here are some more numbers to try:
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