A:
Positive:
1 x 2150305311 x 195482313 x 165408143 x 500071143 x 150371169 x 127237269 x 79937473 x 45461559 x 384671859 x 115672959 x 72673497 x 6149
Negative:
-1 x -21503053-11 x -1954823-13 x -1654081-43 x -500071-143 x -150371-169 x -127237-269 x -79937-473 x -45461-559 x -38467-1859 x -11567-2959 x -7267-3497 x -6149
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 21,503,053, 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 | 21,503,053 | |
| -1 | -21,503,053 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,503,053.
Example:
1 x 21,503,053 = 21,503,053
and
-1 x -21,503,053 = 21,503,053
Notice both answers equal 21,503,053
With that explanation out of the way, let's continue. Next, we take the number 21,503,053 and divide it by 2:
21,503,053 ÷ 2 = 10,751,526.5
If the quotient is a whole number, then 2 and 10,751,526.5 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 | 21,503,053 | |
| -1 | -21,503,053 |
Now, we try dividing 21,503,053 by 3:
21,503,053 ÷ 3 = 7,167,684.3333
If the quotient is a whole number, then 3 and 7,167,684.3333 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 | 21,503,053 | |
| -1 | -21,503,053 |
Let's try dividing by 4:
21,503,053 ÷ 4 = 5,375,763.25
If the quotient is a whole number, then 4 and 5,375,763.25 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 | 21,503,053 | |
| -1 | 21,503,053 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 43 | 143 | 169 | 269 | 473 | 559 | 1,859 | 2,959 | 3,497 | 6,149 | 7,267 | 11,567 | 38,467 | 45,461 | 79,937 | 127,237 | 150,371 | 500,071 | 1,654,081 | 1,954,823 | 21,503,053 |
| -1 | -11 | -13 | -43 | -143 | -169 | -269 | -473 | -559 | -1,859 | -2,959 | -3,497 | -6,149 | -7,267 | -11,567 | -38,467 | -45,461 | -79,937 | -127,237 | -150,371 | -500,071 | -1,654,081 | -1,954,823 | -21,503,053 |
Here are some more numbers to try:
Try the factor calculator