A:
Positive:
1 x 300234555 x 60046917 x 428906511 x 272940535 x 85781355 x 54588177 x 389915385 x 77983
Negative:
-1 x -30023455-5 x -6004691-7 x -4289065-11 x -2729405-35 x -857813-55 x -545881-77 x -389915-385 x -77983
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 30,023,455, 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 | 30,023,455 | |
| -1 | -30,023,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,023,455.
Example:
1 x 30,023,455 = 30,023,455
and
-1 x -30,023,455 = 30,023,455
Notice both answers equal 30,023,455
With that explanation out of the way, let's continue. Next, we take the number 30,023,455 and divide it by 2:
30,023,455 ÷ 2 = 15,011,727.5
If the quotient is a whole number, then 2 and 15,011,727.5 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 | 30,023,455 | |
| -1 | -30,023,455 |
Now, we try dividing 30,023,455 by 3:
30,023,455 ÷ 3 = 10,007,818.3333
If the quotient is a whole number, then 3 and 10,007,818.3333 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 | 30,023,455 | |
| -1 | -30,023,455 |
Let's try dividing by 4:
30,023,455 ÷ 4 = 7,505,863.75
If the quotient is a whole number, then 4 and 7,505,863.75 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 | 30,023,455 | |
| -1 | 30,023,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 77,983 | 389,915 | 545,881 | 857,813 | 2,729,405 | 4,289,065 | 6,004,691 | 30,023,455 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -77,983 | -389,915 | -545,881 | -857,813 | -2,729,405 | -4,289,065 | -6,004,691 | -30,023,455 |
Here are some more numbers to try:
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