A:
Positive:
1 x 72010197 x 102871719 x 37900129 x 248311133 x 54143203 x 35473551 x 130691867 x 3857
Negative:
-1 x -7201019-7 x -1028717-19 x -379001-29 x -248311-133 x -54143-203 x -35473-551 x -13069-1867 x -3857
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 7,201,019, 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 | 7,201,019 | |
| -1 | -7,201,019 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,201,019.
Example:
1 x 7,201,019 = 7,201,019
and
-1 x -7,201,019 = 7,201,019
Notice both answers equal 7,201,019
With that explanation out of the way, let's continue. Next, we take the number 7,201,019 and divide it by 2:
7,201,019 ÷ 2 = 3,600,509.5
If the quotient is a whole number, then 2 and 3,600,509.5 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 | 7,201,019 | |
| -1 | -7,201,019 |
Now, we try dividing 7,201,019 by 3:
7,201,019 ÷ 3 = 2,400,339.6667
If the quotient is a whole number, then 3 and 2,400,339.6667 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 | 7,201,019 | |
| -1 | -7,201,019 |
Let's try dividing by 4:
7,201,019 ÷ 4 = 1,800,254.75
If the quotient is a whole number, then 4 and 1,800,254.75 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 | 7,201,019 | |
| -1 | 7,201,019 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 29 | 133 | 203 | 551 | 1,867 | 3,857 | 13,069 | 35,473 | 54,143 | 248,311 | 379,001 | 1,028,717 | 7,201,019 |
| -1 | -7 | -19 | -29 | -133 | -203 | -551 | -1,867 | -3,857 | -13,069 | -35,473 | -54,143 | -248,311 | -379,001 | -1,028,717 | -7,201,019 |
Here are some more numbers to try:
Try the factor calculator