A:
Positive:
1 x 2177350131 x 70237137 x 58847341 x 531061463 x 470271147 x 189831271 x 171311517 x 14353
Negative:
-1 x -21773501-31 x -702371-37 x -588473-41 x -531061-463 x -47027-1147 x -18983-1271 x -17131-1517 x -14353
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 21,773,501, 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 | 21,773,501 | |
| -1 | -21,773,501 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,773,501.
Example:
1 x 21,773,501 = 21,773,501
and
-1 x -21,773,501 = 21,773,501
Notice both answers equal 21,773,501
With that explanation out of the way, let's continue. Next, we take the number 21,773,501 and divide it by 2:
21,773,501 ÷ 2 = 10,886,750.5
If the quotient is a whole number, then 2 and 10,886,750.5 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 | 21,773,501 | |
| -1 | -21,773,501 |
Now, we try dividing 21,773,501 by 3:
21,773,501 ÷ 3 = 7,257,833.6667
If the quotient is a whole number, then 3 and 7,257,833.6667 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 | 21,773,501 | |
| -1 | -21,773,501 |
Let's try dividing by 4:
21,773,501 ÷ 4 = 5,443,375.25
If the quotient is a whole number, then 4 and 5,443,375.25 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 | 21,773,501 | |
| -1 | 21,773,501 |
If you did it right, you will end up with this table:
| 1 | 31 | 37 | 41 | 463 | 1,147 | 1,271 | 1,517 | 14,353 | 17,131 | 18,983 | 47,027 | 531,061 | 588,473 | 702,371 | 21,773,501 |
| -1 | -31 | -37 | -41 | -463 | -1,147 | -1,271 | -1,517 | -14,353 | -17,131 | -18,983 | -47,027 | -531,061 | -588,473 | -702,371 | -21,773,501 |
Here are some more numbers to try:
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