A:
Positive:
1 x 21642400319 x 1139073767 x 3230209197 x 1098599863 x 2507811273 x 1700113743 x 5782113199 x 16397
Negative:
-1 x -216424003-19 x -11390737-67 x -3230209-197 x -1098599-863 x -250781-1273 x -170011-3743 x -57821-13199 x -16397
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 216,424,003, 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 | 216,424,003 | |
| -1 | -216,424,003 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 216,424,003.
Example:
1 x 216,424,003 = 216,424,003
and
-1 x -216,424,003 = 216,424,003
Notice both answers equal 216,424,003
With that explanation out of the way, let's continue. Next, we take the number 216,424,003 and divide it by 2:
216,424,003 ÷ 2 = 108,212,001.5
If the quotient is a whole number, then 2 and 108,212,001.5 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 | 216,424,003 | |
| -1 | -216,424,003 |
Now, we try dividing 216,424,003 by 3:
216,424,003 ÷ 3 = 72,141,334.3333
If the quotient is a whole number, then 3 and 72,141,334.3333 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 | 216,424,003 | |
| -1 | -216,424,003 |
Let's try dividing by 4:
216,424,003 ÷ 4 = 54,106,000.75
If the quotient is a whole number, then 4 and 54,106,000.75 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 | 216,424,003 | |
| -1 | 216,424,003 |
If you did it right, you will end up with this table:
| 1 | 19 | 67 | 197 | 863 | 1,273 | 3,743 | 13,199 | 16,397 | 57,821 | 170,011 | 250,781 | 1,098,599 | 3,230,209 | 11,390,737 | 216,424,003 |
| -1 | -19 | -67 | -197 | -863 | -1,273 | -3,743 | -13,199 | -16,397 | -57,821 | -170,011 | -250,781 | -1,098,599 | -3,230,209 | -11,390,737 | -216,424,003 |
Here are some more numbers to try:
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