A:
Positive:
1 x 797294155 x 1594588319 x 419628595 x 839257419 x 1902852003 x 398052095 x 380577961 x 10015
Negative:
-1 x -79729415-5 x -15945883-19 x -4196285-95 x -839257-419 x -190285-2003 x -39805-2095 x -38057-7961 x -10015
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 79,729,415, 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 | 79,729,415 | |
| -1 | -79,729,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 79,729,415.
Example:
1 x 79,729,415 = 79,729,415
and
-1 x -79,729,415 = 79,729,415
Notice both answers equal 79,729,415
With that explanation out of the way, let's continue. Next, we take the number 79,729,415 and divide it by 2:
79,729,415 ÷ 2 = 39,864,707.5
If the quotient is a whole number, then 2 and 39,864,707.5 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 | 79,729,415 | |
| -1 | -79,729,415 |
Now, we try dividing 79,729,415 by 3:
79,729,415 ÷ 3 = 26,576,471.6667
If the quotient is a whole number, then 3 and 26,576,471.6667 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 | 79,729,415 | |
| -1 | -79,729,415 |
Let's try dividing by 4:
79,729,415 ÷ 4 = 19,932,353.75
If the quotient is a whole number, then 4 and 19,932,353.75 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 | 79,729,415 | |
| -1 | 79,729,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 419 | 2,003 | 2,095 | 7,961 | 10,015 | 38,057 | 39,805 | 190,285 | 839,257 | 4,196,285 | 15,945,883 | 79,729,415 |
| -1 | -5 | -19 | -95 | -419 | -2,003 | -2,095 | -7,961 | -10,015 | -38,057 | -39,805 | -190,285 | -839,257 | -4,196,285 | -15,945,883 | -79,729,415 |
Here are some more numbers to try:
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