A:
Positive:
1 x 16206197 x 23151711 x 14732913 x 12466377 x 2104791 x 17809143 x 113331001 x 1619
Negative:
-1 x -1620619-7 x -231517-11 x -147329-13 x -124663-77 x -21047-91 x -17809-143 x -11333-1001 x -1619
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 1,620,619, 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 | 1,620,619 | |
| -1 | -1,620,619 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,620,619.
Example:
1 x 1,620,619 = 1,620,619
and
-1 x -1,620,619 = 1,620,619
Notice both answers equal 1,620,619
With that explanation out of the way, let's continue. Next, we take the number 1,620,619 and divide it by 2:
1,620,619 ÷ 2 = 810,309.5
If the quotient is a whole number, then 2 and 810,309.5 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 | 1,620,619 | |
| -1 | -1,620,619 |
Now, we try dividing 1,620,619 by 3:
1,620,619 ÷ 3 = 540,206.3333
If the quotient is a whole number, then 3 and 540,206.3333 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 | 1,620,619 | |
| -1 | -1,620,619 |
Let's try dividing by 4:
1,620,619 ÷ 4 = 405,154.75
If the quotient is a whole number, then 4 and 405,154.75 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 | 1,620,619 | |
| -1 | 1,620,619 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 1,001 | 1,619 | 11,333 | 17,809 | 21,047 | 124,663 | 147,329 | 231,517 | 1,620,619 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -1,001 | -1,619 | -11,333 | -17,809 | -21,047 | -124,663 | -147,329 | -231,517 | -1,620,619 |
Here are some more numbers to try:
Try the factor calculator