A:
Positive:
1 x 78770455 x 157540911 x 71609555 x 143219197 x 39985727 x 10835985 x 79972167 x 3635
Negative:
-1 x -7877045-5 x -1575409-11 x -716095-55 x -143219-197 x -39985-727 x -10835-985 x -7997-2167 x -3635
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 7,877,045, 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 | 7,877,045 | |
| -1 | -7,877,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,877,045.
Example:
1 x 7,877,045 = 7,877,045
and
-1 x -7,877,045 = 7,877,045
Notice both answers equal 7,877,045
With that explanation out of the way, let's continue. Next, we take the number 7,877,045 and divide it by 2:
7,877,045 ÷ 2 = 3,938,522.5
If the quotient is a whole number, then 2 and 3,938,522.5 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 | 7,877,045 | |
| -1 | -7,877,045 |
Now, we try dividing 7,877,045 by 3:
7,877,045 ÷ 3 = 2,625,681.6667
If the quotient is a whole number, then 3 and 2,625,681.6667 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 | 7,877,045 | |
| -1 | -7,877,045 |
Let's try dividing by 4:
7,877,045 ÷ 4 = 1,969,261.25
If the quotient is a whole number, then 4 and 1,969,261.25 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 | 7,877,045 | |
| -1 | 7,877,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 197 | 727 | 985 | 2,167 | 3,635 | 7,997 | 10,835 | 39,985 | 143,219 | 716,095 | 1,575,409 | 7,877,045 |
| -1 | -5 | -11 | -55 | -197 | -727 | -985 | -2,167 | -3,635 | -7,997 | -10,835 | -39,985 | -143,219 | -716,095 | -1,575,409 | -7,877,045 |
Here are some more numbers to try:
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