A:
Positive:
1 x 657762497 x 939660711 x 597965977 x 854237157 x 4189571099 x 598511727 x 380875441 x 12089
Negative:
-1 x -65776249-7 x -9396607-11 x -5979659-77 x -854237-157 x -418957-1099 x -59851-1727 x -38087-5441 x -12089
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 65,776,249, 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 | 65,776,249 | |
| -1 | -65,776,249 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,776,249.
Example:
1 x 65,776,249 = 65,776,249
and
-1 x -65,776,249 = 65,776,249
Notice both answers equal 65,776,249
With that explanation out of the way, let's continue. Next, we take the number 65,776,249 and divide it by 2:
65,776,249 ÷ 2 = 32,888,124.5
If the quotient is a whole number, then 2 and 32,888,124.5 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 | 65,776,249 | |
| -1 | -65,776,249 |
Now, we try dividing 65,776,249 by 3:
65,776,249 ÷ 3 = 21,925,416.3333
If the quotient is a whole number, then 3 and 21,925,416.3333 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 | 65,776,249 | |
| -1 | -65,776,249 |
Let's try dividing by 4:
65,776,249 ÷ 4 = 16,444,062.25
If the quotient is a whole number, then 4 and 16,444,062.25 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 | 65,776,249 | |
| -1 | 65,776,249 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 157 | 1,099 | 1,727 | 5,441 | 12,089 | 38,087 | 59,851 | 418,957 | 854,237 | 5,979,659 | 9,396,607 | 65,776,249 |
| -1 | -7 | -11 | -77 | -157 | -1,099 | -1,727 | -5,441 | -12,089 | -38,087 | -59,851 | -418,957 | -854,237 | -5,979,659 | -9,396,607 | -65,776,249 |
Here are some more numbers to try:
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