A:
Positive:
1 x 301802055 x 603604111 x 274365531 x 97355555 x 548731155 x 194711341 x 88505571 x 52855961 x 314051705 x 177012855 x 105714805 x 6281
Negative:
-1 x -30180205-5 x -6036041-11 x -2743655-31 x -973555-55 x -548731-155 x -194711-341 x -88505-571 x -52855-961 x -31405-1705 x -17701-2855 x -10571-4805 x -6281
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 30,180,205, 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 | 30,180,205 | |
| -1 | -30,180,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,180,205.
Example:
1 x 30,180,205 = 30,180,205
and
-1 x -30,180,205 = 30,180,205
Notice both answers equal 30,180,205
With that explanation out of the way, let's continue. Next, we take the number 30,180,205 and divide it by 2:
30,180,205 ÷ 2 = 15,090,102.5
If the quotient is a whole number, then 2 and 15,090,102.5 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 | 30,180,205 | |
| -1 | -30,180,205 |
Now, we try dividing 30,180,205 by 3:
30,180,205 ÷ 3 = 10,060,068.3333
If the quotient is a whole number, then 3 and 10,060,068.3333 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 | 30,180,205 | |
| -1 | -30,180,205 |
Let's try dividing by 4:
30,180,205 ÷ 4 = 7,545,051.25
If the quotient is a whole number, then 4 and 7,545,051.25 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 | 30,180,205 | |
| -1 | 30,180,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 31 | 55 | 155 | 341 | 571 | 961 | 1,705 | 2,855 | 4,805 | 6,281 | 10,571 | 17,701 | 31,405 | 52,855 | 88,505 | 194,711 | 548,731 | 973,555 | 2,743,655 | 6,036,041 | 30,180,205 |
| -1 | -5 | -11 | -31 | -55 | -155 | -341 | -571 | -961 | -1,705 | -2,855 | -4,805 | -6,281 | -10,571 | -17,701 | -31,405 | -52,855 | -88,505 | -194,711 | -548,731 | -973,555 | -2,743,655 | -6,036,041 | -30,180,205 |
Here are some more numbers to try:
Try the factor calculator