Express a matrix as product of elementary matrices

How to express a matrix as a product of some necessary elementary matrices? Is there any function in matlab?

[Dyuman Joshi]

What does "necessary elementary matrices" mean?

Can you give an example?

Answer 1

[KSSV]

If you have a number, you can try to get its multiples or product of numbers using:

x = 10;
v = 2:x/2;
c = v(mod(x,v)==0)

c = 1×2

2 5