A:
Positive:
1 x 1934362111 x 175851123 x 841027101 x 191521253 x 76457757 x 255531111 x 174112323 x 8327
Negative:
-1 x -19343621-11 x -1758511-23 x -841027-101 x -191521-253 x -76457-757 x -25553-1111 x -17411-2323 x -8327
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 19,343,621, 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 | 19,343,621 | |
| -1 | -19,343,621 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,343,621.
Example:
1 x 19,343,621 = 19,343,621
and
-1 x -19,343,621 = 19,343,621
Notice both answers equal 19,343,621
With that explanation out of the way, let's continue. Next, we take the number 19,343,621 and divide it by 2:
19,343,621 ÷ 2 = 9,671,810.5
If the quotient is a whole number, then 2 and 9,671,810.5 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 | 19,343,621 | |
| -1 | -19,343,621 |
Now, we try dividing 19,343,621 by 3:
19,343,621 ÷ 3 = 6,447,873.6667
If the quotient is a whole number, then 3 and 6,447,873.6667 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 | 19,343,621 | |
| -1 | -19,343,621 |
Let's try dividing by 4:
19,343,621 ÷ 4 = 4,835,905.25
If the quotient is a whole number, then 4 and 4,835,905.25 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 | 19,343,621 | |
| -1 | 19,343,621 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 101 | 253 | 757 | 1,111 | 2,323 | 8,327 | 17,411 | 25,553 | 76,457 | 191,521 | 841,027 | 1,758,511 | 19,343,621 |
| -1 | -11 | -23 | -101 | -253 | -757 | -1,111 | -2,323 | -8,327 | -17,411 | -25,553 | -76,457 | -191,521 | -841,027 | -1,758,511 | -19,343,621 |
Here are some more numbers to try:
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