A:
Positive:
1 x 2122486311 x 192953331 x 68467367 x 316789341 x 62243737 x 28799929 x 228472077 x 10219
Negative:
-1 x -21224863-11 x -1929533-31 x -684673-67 x -316789-341 x -62243-737 x -28799-929 x -22847-2077 x -10219
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 21,224,863, 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 | 21,224,863 | |
| -1 | -21,224,863 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,224,863.
Example:
1 x 21,224,863 = 21,224,863
and
-1 x -21,224,863 = 21,224,863
Notice both answers equal 21,224,863
With that explanation out of the way, let's continue. Next, we take the number 21,224,863 and divide it by 2:
21,224,863 ÷ 2 = 10,612,431.5
If the quotient is a whole number, then 2 and 10,612,431.5 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 | 21,224,863 | |
| -1 | -21,224,863 |
Now, we try dividing 21,224,863 by 3:
21,224,863 ÷ 3 = 7,074,954.3333
If the quotient is a whole number, then 3 and 7,074,954.3333 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 | 21,224,863 | |
| -1 | -21,224,863 |
Let's try dividing by 4:
21,224,863 ÷ 4 = 5,306,215.75
If the quotient is a whole number, then 4 and 5,306,215.75 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 | 21,224,863 | |
| -1 | 21,224,863 |
If you did it right, you will end up with this table:
| 1 | 11 | 31 | 67 | 341 | 737 | 929 | 2,077 | 10,219 | 22,847 | 28,799 | 62,243 | 316,789 | 684,673 | 1,929,533 | 21,224,863 |
| -1 | -11 | -31 | -67 | -341 | -737 | -929 | -2,077 | -10,219 | -22,847 | -28,799 | -62,243 | -316,789 | -684,673 | -1,929,533 | -21,224,863 |
Here are some more numbers to try:
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