A:
Positive:
1 x 1805821329 x 62269731 x 58252353 x 340721379 x 47647899 x 200871537 x 117491643 x 10991
Negative:
-1 x -18058213-29 x -622697-31 x -582523-53 x -340721-379 x -47647-899 x -20087-1537 x -11749-1643 x -10991
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 18,058,213, 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 | 18,058,213 | |
| -1 | -18,058,213 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,058,213.
Example:
1 x 18,058,213 = 18,058,213
and
-1 x -18,058,213 = 18,058,213
Notice both answers equal 18,058,213
With that explanation out of the way, let's continue. Next, we take the number 18,058,213 and divide it by 2:
18,058,213 ÷ 2 = 9,029,106.5
If the quotient is a whole number, then 2 and 9,029,106.5 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 | 18,058,213 | |
| -1 | -18,058,213 |
Now, we try dividing 18,058,213 by 3:
18,058,213 ÷ 3 = 6,019,404.3333
If the quotient is a whole number, then 3 and 6,019,404.3333 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 | 18,058,213 | |
| -1 | -18,058,213 |
Let's try dividing by 4:
18,058,213 ÷ 4 = 4,514,553.25
If the quotient is a whole number, then 4 and 4,514,553.25 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 | 18,058,213 | |
| -1 | 18,058,213 |
If you did it right, you will end up with this table:
| 1 | 29 | 31 | 53 | 379 | 899 | 1,537 | 1,643 | 10,991 | 11,749 | 20,087 | 47,647 | 340,721 | 582,523 | 622,697 | 18,058,213 |
| -1 | -29 | -31 | -53 | -379 | -899 | -1,537 | -1,643 | -10,991 | -11,749 | -20,087 | -47,647 | -340,721 | -582,523 | -622,697 | -18,058,213 |
Here are some more numbers to try:
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