A:
Positive:
1 x 21404117 x 30577313 x 16464743 x 4977791 x 23521301 x 7111547 x 3913559 x 3829
Negative:
-1 x -2140411-7 x -305773-13 x -164647-43 x -49777-91 x -23521-301 x -7111-547 x -3913-559 x -3829
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 2,140,411, 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 | 2,140,411 | |
| -1 | -2,140,411 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,140,411.
Example:
1 x 2,140,411 = 2,140,411
and
-1 x -2,140,411 = 2,140,411
Notice both answers equal 2,140,411
With that explanation out of the way, let's continue. Next, we take the number 2,140,411 and divide it by 2:
2,140,411 ÷ 2 = 1,070,205.5
If the quotient is a whole number, then 2 and 1,070,205.5 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 | 2,140,411 | |
| -1 | -2,140,411 |
Now, we try dividing 2,140,411 by 3:
2,140,411 ÷ 3 = 713,470.3333
If the quotient is a whole number, then 3 and 713,470.3333 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 | 2,140,411 | |
| -1 | -2,140,411 |
Let's try dividing by 4:
2,140,411 ÷ 4 = 535,102.75
If the quotient is a whole number, then 4 and 535,102.75 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 | 2,140,411 | |
| -1 | 2,140,411 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 43 | 91 | 301 | 547 | 559 | 3,829 | 3,913 | 7,111 | 23,521 | 49,777 | 164,647 | 305,773 | 2,140,411 |
| -1 | -7 | -13 | -43 | -91 | -301 | -547 | -559 | -3,829 | -3,913 | -7,111 | -23,521 | -49,777 | -164,647 | -305,773 | -2,140,411 |
Here are some more numbers to try:
Try the factor calculator