A:
Positive:
1 x 61516541911 x 5592412961 x 1008467989 x 6911971671 x 916789979 x 6283615429 x 11331110301 x 59719
Negative:
-1 x -615165419-11 x -55924129-61 x -10084679-89 x -6911971-671 x -916789-979 x -628361-5429 x -113311-10301 x -59719
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 615,165,419, 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 | 615,165,419 | |
| -1 | -615,165,419 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 615,165,419.
Example:
1 x 615,165,419 = 615,165,419
and
-1 x -615,165,419 = 615,165,419
Notice both answers equal 615,165,419
With that explanation out of the way, let's continue. Next, we take the number 615,165,419 and divide it by 2:
615,165,419 ÷ 2 = 307,582,709.5
If the quotient is a whole number, then 2 and 307,582,709.5 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 | 615,165,419 | |
| -1 | -615,165,419 |
Now, we try dividing 615,165,419 by 3:
615,165,419 ÷ 3 = 205,055,139.6667
If the quotient is a whole number, then 3 and 205,055,139.6667 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 | 615,165,419 | |
| -1 | -615,165,419 |
Let's try dividing by 4:
615,165,419 ÷ 4 = 153,791,354.75
If the quotient is a whole number, then 4 and 153,791,354.75 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 | 615,165,419 | |
| -1 | 615,165,419 |
If you did it right, you will end up with this table:
| 1 | 11 | 61 | 89 | 671 | 979 | 5,429 | 10,301 | 59,719 | 113,311 | 628,361 | 916,789 | 6,911,971 | 10,084,679 | 55,924,129 | 615,165,419 |
| -1 | -11 | -61 | -89 | -671 | -979 | -5,429 | -10,301 | -59,719 | -113,311 | -628,361 | -916,789 | -6,911,971 | -10,084,679 | -55,924,129 | -615,165,419 |
Here are some more numbers to try:
Try the factor calculator