A:
Positive:
1 x 2041300313 x 157023143 x 47472153 x 385151169 x 120787559 x 36517689 x 296272279 x 89572809 x 7267
Negative:
-1 x -20413003-13 x -1570231-43 x -474721-53 x -385151-169 x -120787-559 x -36517-689 x -29627-2279 x -8957-2809 x -7267
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 20,413,003, 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 | 20,413,003 | |
| -1 | -20,413,003 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,413,003.
Example:
1 x 20,413,003 = 20,413,003
and
-1 x -20,413,003 = 20,413,003
Notice both answers equal 20,413,003
With that explanation out of the way, let's continue. Next, we take the number 20,413,003 and divide it by 2:
20,413,003 ÷ 2 = 10,206,501.5
If the quotient is a whole number, then 2 and 10,206,501.5 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 | 20,413,003 | |
| -1 | -20,413,003 |
Now, we try dividing 20,413,003 by 3:
20,413,003 ÷ 3 = 6,804,334.3333
If the quotient is a whole number, then 3 and 6,804,334.3333 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 | 20,413,003 | |
| -1 | -20,413,003 |
Let's try dividing by 4:
20,413,003 ÷ 4 = 5,103,250.75
If the quotient is a whole number, then 4 and 5,103,250.75 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 | 20,413,003 | |
| -1 | 20,413,003 |
If you did it right, you will end up with this table:
| 1 | 13 | 43 | 53 | 169 | 559 | 689 | 2,279 | 2,809 | 7,267 | 8,957 | 29,627 | 36,517 | 120,787 | 385,151 | 474,721 | 1,570,231 | 20,413,003 |
| -1 | -13 | -43 | -53 | -169 | -559 | -689 | -2,279 | -2,809 | -7,267 | -8,957 | -29,627 | -36,517 | -120,787 | -385,151 | -474,721 | -1,570,231 | -20,413,003 |
Here are some more numbers to try:
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