A:
Positive:
1 x 3048624711 x 277147723 x 132548941 x 743567253 x 120499451 x 67597943 x 323292939 x 10373
Negative:
-1 x -30486247-11 x -2771477-23 x -1325489-41 x -743567-253 x -120499-451 x -67597-943 x -32329-2939 x -10373
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 30,486,247, 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 | 30,486,247 | |
| -1 | -30,486,247 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,486,247.
Example:
1 x 30,486,247 = 30,486,247
and
-1 x -30,486,247 = 30,486,247
Notice both answers equal 30,486,247
With that explanation out of the way, let's continue. Next, we take the number 30,486,247 and divide it by 2:
30,486,247 ÷ 2 = 15,243,123.5
If the quotient is a whole number, then 2 and 15,243,123.5 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 | 30,486,247 | |
| -1 | -30,486,247 |
Now, we try dividing 30,486,247 by 3:
30,486,247 ÷ 3 = 10,162,082.3333
If the quotient is a whole number, then 3 and 10,162,082.3333 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 | 30,486,247 | |
| -1 | -30,486,247 |
Let's try dividing by 4:
30,486,247 ÷ 4 = 7,621,561.75
If the quotient is a whole number, then 4 and 7,621,561.75 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 | 30,486,247 | |
| -1 | 30,486,247 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 41 | 253 | 451 | 943 | 2,939 | 10,373 | 32,329 | 67,597 | 120,499 | 743,567 | 1,325,489 | 2,771,477 | 30,486,247 |
| -1 | -11 | -23 | -41 | -253 | -451 | -943 | -2,939 | -10,373 | -32,329 | -67,597 | -120,499 | -743,567 | -1,325,489 | -2,771,477 | -30,486,247 |
Here are some more numbers to try:
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