A:
Positive:
1 x 30212055 x 60424111 x 27465555 x 54931163 x 18535337 x 8965815 x 37071685 x 1793
Negative:
-1 x -3021205-5 x -604241-11 x -274655-55 x -54931-163 x -18535-337 x -8965-815 x -3707-1685 x -1793
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 3,021,205, 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 | 3,021,205 | |
| -1 | -3,021,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,021,205.
Example:
1 x 3,021,205 = 3,021,205
and
-1 x -3,021,205 = 3,021,205
Notice both answers equal 3,021,205
With that explanation out of the way, let's continue. Next, we take the number 3,021,205 and divide it by 2:
3,021,205 ÷ 2 = 1,510,602.5
If the quotient is a whole number, then 2 and 1,510,602.5 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 | 3,021,205 | |
| -1 | -3,021,205 |
Now, we try dividing 3,021,205 by 3:
3,021,205 ÷ 3 = 1,007,068.3333
If the quotient is a whole number, then 3 and 1,007,068.3333 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 | 3,021,205 | |
| -1 | -3,021,205 |
Let's try dividing by 4:
3,021,205 ÷ 4 = 755,301.25
If the quotient is a whole number, then 4 and 755,301.25 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 | 3,021,205 | |
| -1 | 3,021,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 163 | 337 | 815 | 1,685 | 1,793 | 3,707 | 8,965 | 18,535 | 54,931 | 274,655 | 604,241 | 3,021,205 |
| -1 | -5 | -11 | -55 | -163 | -337 | -815 | -1,685 | -1,793 | -3,707 | -8,965 | -18,535 | -54,931 | -274,655 | -604,241 | -3,021,205 |
Here are some more numbers to try:
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