A:
Positive:
1 x 21403697 x 30576711 x 19457919 x 11265149 x 4368177 x 27797121 x 17689133 x 16093209 x 10241361 x 5929539 x 3971847 x 2527931 x 22991463 x 1463
Negative:
-1 x -2140369-7 x -305767-11 x -194579-19 x -112651-49 x -43681-77 x -27797-121 x -17689-133 x -16093-209 x -10241-361 x -5929-539 x -3971-847 x -2527-931 x -2299-1463 x -1463
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 2,140,369, 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 | 2,140,369 | |
| -1 | -2,140,369 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,140,369.
Example:
1 x 2,140,369 = 2,140,369
and
-1 x -2,140,369 = 2,140,369
Notice both answers equal 2,140,369
With that explanation out of the way, let's continue. Next, we take the number 2,140,369 and divide it by 2:
2,140,369 ÷ 2 = 1,070,184.5
If the quotient is a whole number, then 2 and 1,070,184.5 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 | 2,140,369 | |
| -1 | -2,140,369 |
Now, we try dividing 2,140,369 by 3:
2,140,369 ÷ 3 = 713,456.3333
If the quotient is a whole number, then 3 and 713,456.3333 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 | 2,140,369 | |
| -1 | -2,140,369 |
Let's try dividing by 4:
2,140,369 ÷ 4 = 535,092.25
If the quotient is a whole number, then 4 and 535,092.25 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 | 2,140,369 | |
| -1 | 2,140,369 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 19 | 49 | 77 | 121 | 133 | 209 | 361 | 539 | 847 | 931 | 1,463 | 2,299 | 2,527 | 3,971 | 5,929 | 10,241 | 16,093 | 17,689 | 27,797 | 43,681 | 112,651 | 194,579 | 305,767 | 2,140,369 |
| -1 | -7 | -11 | -19 | -49 | -77 | -121 | -133 | -209 | -361 | -539 | -847 | -931 | -1,463 | -2,299 | -2,527 | -3,971 | -5,929 | -10,241 | -16,093 | -17,689 | -27,797 | -43,681 | -112,651 | -194,579 | -305,767 | -2,140,369 |
Here are some more numbers to try:
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