A:
Positive:
1 x 75812355 x 151624717 x 44595579 x 9596585 x 89191395 x 191931129 x 67151343 x 5645
Negative:
-1 x -7581235-5 x -1516247-17 x -445955-79 x -95965-85 x -89191-395 x -19193-1129 x -6715-1343 x -5645
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 7,581,235, 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 | 7,581,235 | |
| -1 | -7,581,235 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,581,235.
Example:
1 x 7,581,235 = 7,581,235
and
-1 x -7,581,235 = 7,581,235
Notice both answers equal 7,581,235
With that explanation out of the way, let's continue. Next, we take the number 7,581,235 and divide it by 2:
7,581,235 ÷ 2 = 3,790,617.5
If the quotient is a whole number, then 2 and 3,790,617.5 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 | 7,581,235 | |
| -1 | -7,581,235 |
Now, we try dividing 7,581,235 by 3:
7,581,235 ÷ 3 = 2,527,078.3333
If the quotient is a whole number, then 3 and 2,527,078.3333 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 | 7,581,235 | |
| -1 | -7,581,235 |
Let's try dividing by 4:
7,581,235 ÷ 4 = 1,895,308.75
If the quotient is a whole number, then 4 and 1,895,308.75 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 | 7,581,235 | |
| -1 | 7,581,235 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 79 | 85 | 395 | 1,129 | 1,343 | 5,645 | 6,715 | 19,193 | 89,191 | 95,965 | 445,955 | 1,516,247 | 7,581,235 |
| -1 | -5 | -17 | -79 | -85 | -395 | -1,129 | -1,343 | -5,645 | -6,715 | -19,193 | -89,191 | -95,965 | -445,955 | -1,516,247 | -7,581,235 |
Here are some more numbers to try:
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