A:
Positive:
1 x 7185367917 x 422668723 x 3124073127 x 565777391 x 1837691447 x 496572159 x 332812921 x 24599
Negative:
-1 x -71853679-17 x -4226687-23 x -3124073-127 x -565777-391 x -183769-1447 x -49657-2159 x -33281-2921 x -24599
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 71,853,679, 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 | 71,853,679 | |
| -1 | -71,853,679 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,853,679.
Example:
1 x 71,853,679 = 71,853,679
and
-1 x -71,853,679 = 71,853,679
Notice both answers equal 71,853,679
With that explanation out of the way, let's continue. Next, we take the number 71,853,679 and divide it by 2:
71,853,679 ÷ 2 = 35,926,839.5
If the quotient is a whole number, then 2 and 35,926,839.5 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 | 71,853,679 | |
| -1 | -71,853,679 |
Now, we try dividing 71,853,679 by 3:
71,853,679 ÷ 3 = 23,951,226.3333
If the quotient is a whole number, then 3 and 23,951,226.3333 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 | 71,853,679 | |
| -1 | -71,853,679 |
Let's try dividing by 4:
71,853,679 ÷ 4 = 17,963,419.75
If the quotient is a whole number, then 4 and 17,963,419.75 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 | 71,853,679 | |
| -1 | 71,853,679 |
If you did it right, you will end up with this table:
| 1 | 17 | 23 | 127 | 391 | 1,447 | 2,159 | 2,921 | 24,599 | 33,281 | 49,657 | 183,769 | 565,777 | 3,124,073 | 4,226,687 | 71,853,679 |
| -1 | -17 | -23 | -127 | -391 | -1,447 | -2,159 | -2,921 | -24,599 | -33,281 | -49,657 | -183,769 | -565,777 | -3,124,073 | -4,226,687 | -71,853,679 |
Here are some more numbers to try:
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