A:
Positive:
1 x 803782077 x 1148260113 x 618293991 x 883277337 x 2385112359 x 340732621 x 306674381 x 18347
Negative:
-1 x -80378207-7 x -11482601-13 x -6182939-91 x -883277-337 x -238511-2359 x -34073-2621 x -30667-4381 x -18347
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 80,378,207, 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 | 80,378,207 | |
| -1 | -80,378,207 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 80,378,207.
Example:
1 x 80,378,207 = 80,378,207
and
-1 x -80,378,207 = 80,378,207
Notice both answers equal 80,378,207
With that explanation out of the way, let's continue. Next, we take the number 80,378,207 and divide it by 2:
80,378,207 ÷ 2 = 40,189,103.5
If the quotient is a whole number, then 2 and 40,189,103.5 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 | 80,378,207 | |
| -1 | -80,378,207 |
Now, we try dividing 80,378,207 by 3:
80,378,207 ÷ 3 = 26,792,735.6667
If the quotient is a whole number, then 3 and 26,792,735.6667 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 | 80,378,207 | |
| -1 | -80,378,207 |
Let's try dividing by 4:
80,378,207 ÷ 4 = 20,094,551.75
If the quotient is a whole number, then 4 and 20,094,551.75 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 | 80,378,207 | |
| -1 | 80,378,207 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 337 | 2,359 | 2,621 | 4,381 | 18,347 | 30,667 | 34,073 | 238,511 | 883,277 | 6,182,939 | 11,482,601 | 80,378,207 |
| -1 | -7 | -13 | -91 | -337 | -2,359 | -2,621 | -4,381 | -18,347 | -30,667 | -34,073 | -238,511 | -883,277 | -6,182,939 | -11,482,601 | -80,378,207 |
Here are some more numbers to try:
Try the factor calculator