A:
Positive:
1 x 191419155 x 382838313 x 147245517 x 112599565 x 29449185 x 225199221 x 86615289 x 662351019 x 187851105 x 173231445 x 132473757 x 5095
Negative:
-1 x -19141915-5 x -3828383-13 x -1472455-17 x -1125995-65 x -294491-85 x -225199-221 x -86615-289 x -66235-1019 x -18785-1105 x -17323-1445 x -13247-3757 x -5095
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 19,141,915, 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 | 19,141,915 | |
| -1 | -19,141,915 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,141,915.
Example:
1 x 19,141,915 = 19,141,915
and
-1 x -19,141,915 = 19,141,915
Notice both answers equal 19,141,915
With that explanation out of the way, let's continue. Next, we take the number 19,141,915 and divide it by 2:
19,141,915 ÷ 2 = 9,570,957.5
If the quotient is a whole number, then 2 and 9,570,957.5 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 | 19,141,915 | |
| -1 | -19,141,915 |
Now, we try dividing 19,141,915 by 3:
19,141,915 ÷ 3 = 6,380,638.3333
If the quotient is a whole number, then 3 and 6,380,638.3333 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 | 19,141,915 | |
| -1 | -19,141,915 |
Let's try dividing by 4:
19,141,915 ÷ 4 = 4,785,478.75
If the quotient is a whole number, then 4 and 4,785,478.75 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 | 19,141,915 | |
| -1 | 19,141,915 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 17 | 65 | 85 | 221 | 289 | 1,019 | 1,105 | 1,445 | 3,757 | 5,095 | 13,247 | 17,323 | 18,785 | 66,235 | 86,615 | 225,199 | 294,491 | 1,125,995 | 1,472,455 | 3,828,383 | 19,141,915 |
| -1 | -5 | -13 | -17 | -65 | -85 | -221 | -289 | -1,019 | -1,105 | -1,445 | -3,757 | -5,095 | -13,247 | -17,323 | -18,785 | -66,235 | -86,615 | -225,199 | -294,491 | -1,125,995 | -1,472,455 | -3,828,383 | -19,141,915 |
Here are some more numbers to try:
Try the factor calculator