A:
Positive:
1 x 786334017 x 1123334311 x 714849177 x 1021213151 x 5207511057 x 743931661 x 473416763 x 11627
Negative:
-1 x -78633401-7 x -11233343-11 x -7148491-77 x -1021213-151 x -520751-1057 x -74393-1661 x -47341-6763 x -11627
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 78,633,401, 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 | 78,633,401 | |
| -1 | -78,633,401 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,633,401.
Example:
1 x 78,633,401 = 78,633,401
and
-1 x -78,633,401 = 78,633,401
Notice both answers equal 78,633,401
With that explanation out of the way, let's continue. Next, we take the number 78,633,401 and divide it by 2:
78,633,401 ÷ 2 = 39,316,700.5
If the quotient is a whole number, then 2 and 39,316,700.5 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 | 78,633,401 | |
| -1 | -78,633,401 |
Now, we try dividing 78,633,401 by 3:
78,633,401 ÷ 3 = 26,211,133.6667
If the quotient is a whole number, then 3 and 26,211,133.6667 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 | 78,633,401 | |
| -1 | -78,633,401 |
Let's try dividing by 4:
78,633,401 ÷ 4 = 19,658,350.25
If the quotient is a whole number, then 4 and 19,658,350.25 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 | 78,633,401 | |
| -1 | 78,633,401 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 151 | 1,057 | 1,661 | 6,763 | 11,627 | 47,341 | 74,393 | 520,751 | 1,021,213 | 7,148,491 | 11,233,343 | 78,633,401 |
| -1 | -7 | -11 | -77 | -151 | -1,057 | -1,661 | -6,763 | -11,627 | -47,341 | -74,393 | -520,751 | -1,021,213 | -7,148,491 | -11,233,343 | -78,633,401 |
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