There is no such number because everything is a multiple of 1
No, but factors can.
The way you find a multiple of a number is by looking at all the number that equal it. ex. 6: 6,12,18,24,30,36,42,48 and more on multiples never stop but greatest common factors do.
Multiply the number by all of the numbers from 1 to infinity.
To find the LCM of a number in this case 6 and 9 you find all of their multiples that they share in this caseThe multiples of 6 are 2,3,6
There are an infinite number of multiples for 3
To find all of the multiples of any number is impossible because you can go on forever, but any number that ends in 5 or 0 would be a multiple ie. 25, 60, 987365, and 2349659830 are all multiples of 5
By comparing its multiples to the multiples of another number.
Multiply a number by successive counting numbers to find its multiples.
Finding all the multiples of a number won't happen quickly. It's not even possible. To get started, add a number to itself. Keep adding that number to the total until you reach infinity.
Yes, All multiples of an even number are themselves even. 4 is an even number, so its multiples are all even.
The number is infinite.