A:
Positive:
1 x 306544155 x 613088311 x 278676555 x 557353349 x 878351597 x 191951745 x 175673839 x 7985
Negative:
-1 x -30654415-5 x -6130883-11 x -2786765-55 x -557353-349 x -87835-1597 x -19195-1745 x -17567-3839 x -7985
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 30,654,415, 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 | 30,654,415 | |
| -1 | -30,654,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,654,415.
Example:
1 x 30,654,415 = 30,654,415
and
-1 x -30,654,415 = 30,654,415
Notice both answers equal 30,654,415
With that explanation out of the way, let's continue. Next, we take the number 30,654,415 and divide it by 2:
30,654,415 ÷ 2 = 15,327,207.5
If the quotient is a whole number, then 2 and 15,327,207.5 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 | 30,654,415 | |
| -1 | -30,654,415 |
Now, we try dividing 30,654,415 by 3:
30,654,415 ÷ 3 = 10,218,138.3333
If the quotient is a whole number, then 3 and 10,218,138.3333 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 | 30,654,415 | |
| -1 | -30,654,415 |
Let's try dividing by 4:
30,654,415 ÷ 4 = 7,663,603.75
If the quotient is a whole number, then 4 and 7,663,603.75 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 | 30,654,415 | |
| -1 | 30,654,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 349 | 1,597 | 1,745 | 3,839 | 7,985 | 17,567 | 19,195 | 87,835 | 557,353 | 2,786,765 | 6,130,883 | 30,654,415 |
| -1 | -5 | -11 | -55 | -349 | -1,597 | -1,745 | -3,839 | -7,985 | -17,567 | -19,195 | -87,835 | -557,353 | -2,786,765 | -6,130,883 | -30,654,415 |
Here are some more numbers to try:
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