A:
Positive:
1 x 1870449113 x 143880761 x 306631103 x 181597229 x 81679793 x 235871339 x 139692977 x 6283
Negative:
-1 x -18704491-13 x -1438807-61 x -306631-103 x -181597-229 x -81679-793 x -23587-1339 x -13969-2977 x -6283
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 18,704,491, 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 | 18,704,491 | |
| -1 | -18,704,491 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,704,491.
Example:
1 x 18,704,491 = 18,704,491
and
-1 x -18,704,491 = 18,704,491
Notice both answers equal 18,704,491
With that explanation out of the way, let's continue. Next, we take the number 18,704,491 and divide it by 2:
18,704,491 ÷ 2 = 9,352,245.5
If the quotient is a whole number, then 2 and 9,352,245.5 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 | 18,704,491 | |
| -1 | -18,704,491 |
Now, we try dividing 18,704,491 by 3:
18,704,491 ÷ 3 = 6,234,830.3333
If the quotient is a whole number, then 3 and 6,234,830.3333 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 | 18,704,491 | |
| -1 | -18,704,491 |
Let's try dividing by 4:
18,704,491 ÷ 4 = 4,676,122.75
If the quotient is a whole number, then 4 and 4,676,122.75 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 | 18,704,491 | |
| -1 | 18,704,491 |
If you did it right, you will end up with this table:
| 1 | 13 | 61 | 103 | 229 | 793 | 1,339 | 2,977 | 6,283 | 13,969 | 23,587 | 81,679 | 181,597 | 306,631 | 1,438,807 | 18,704,491 |
| -1 | -13 | -61 | -103 | -229 | -793 | -1,339 | -2,977 | -6,283 | -13,969 | -23,587 | -81,679 | -181,597 | -306,631 | -1,438,807 | -18,704,491 |
Here are some more numbers to try:
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