A:
Positive:
1 x 77420217 x 110600317 x 45541343 x 18004789 x 86989119 x 65059289 x 26789301 x 25721623 x 12427731 x 105911513 x 51172023 x 3827
Negative:
-1 x -7742021-7 x -1106003-17 x -455413-43 x -180047-89 x -86989-119 x -65059-289 x -26789-301 x -25721-623 x -12427-731 x -10591-1513 x -5117-2023 x -3827
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 7,742,021, 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 | 7,742,021 | |
| -1 | -7,742,021 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,742,021.
Example:
1 x 7,742,021 = 7,742,021
and
-1 x -7,742,021 = 7,742,021
Notice both answers equal 7,742,021
With that explanation out of the way, let's continue. Next, we take the number 7,742,021 and divide it by 2:
7,742,021 ÷ 2 = 3,871,010.5
If the quotient is a whole number, then 2 and 3,871,010.5 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 | 7,742,021 | |
| -1 | -7,742,021 |
Now, we try dividing 7,742,021 by 3:
7,742,021 ÷ 3 = 2,580,673.6667
If the quotient is a whole number, then 3 and 2,580,673.6667 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 | 7,742,021 | |
| -1 | -7,742,021 |
Let's try dividing by 4:
7,742,021 ÷ 4 = 1,935,505.25
If the quotient is a whole number, then 4 and 1,935,505.25 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 | 7,742,021 | |
| -1 | 7,742,021 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 43 | 89 | 119 | 289 | 301 | 623 | 731 | 1,513 | 2,023 | 3,827 | 5,117 | 10,591 | 12,427 | 25,721 | 26,789 | 65,059 | 86,989 | 180,047 | 455,413 | 1,106,003 | 7,742,021 |
| -1 | -7 | -17 | -43 | -89 | -119 | -289 | -301 | -623 | -731 | -1,513 | -2,023 | -3,827 | -5,117 | -10,591 | -12,427 | -25,721 | -26,789 | -65,059 | -86,989 | -180,047 | -455,413 | -1,106,003 | -7,742,021 |
Here are some more numbers to try:
Try the factor calculator