A:
Positive:
1 x 790398077 x 1129140111 x 718543737 x 213621177 x 1026491259 x 305173407 x 1942012849 x 27743
Negative:
-1 x -79039807-7 x -11291401-11 x -7185437-37 x -2136211-77 x -1026491-259 x -305173-407 x -194201-2849 x -27743
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 79,039,807, 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 | 79,039,807 | |
| -1 | -79,039,807 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 79,039,807.
Example:
1 x 79,039,807 = 79,039,807
and
-1 x -79,039,807 = 79,039,807
Notice both answers equal 79,039,807
With that explanation out of the way, let's continue. Next, we take the number 79,039,807 and divide it by 2:
79,039,807 ÷ 2 = 39,519,903.5
If the quotient is a whole number, then 2 and 39,519,903.5 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 | 79,039,807 | |
| -1 | -79,039,807 |
Now, we try dividing 79,039,807 by 3:
79,039,807 ÷ 3 = 26,346,602.3333
If the quotient is a whole number, then 3 and 26,346,602.3333 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 | 79,039,807 | |
| -1 | -79,039,807 |
Let's try dividing by 4:
79,039,807 ÷ 4 = 19,759,951.75
If the quotient is a whole number, then 4 and 19,759,951.75 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 | 79,039,807 | |
| -1 | 79,039,807 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 37 | 77 | 259 | 407 | 2,849 | 27,743 | 194,201 | 305,173 | 1,026,491 | 2,136,211 | 7,185,437 | 11,291,401 | 79,039,807 |
| -1 | -7 | -11 | -37 | -77 | -259 | -407 | -2,849 | -27,743 | -194,201 | -305,173 | -1,026,491 | -2,136,211 | -7,185,437 | -11,291,401 | -79,039,807 |
Here are some more numbers to try:
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