12 | 2 6 | 2 3 | 3 1 | 18 | 2 9 | 3 3 | 3 1 |
12 = 2 × 2 × 3 = $$2^2 \cdot 3$$
18 = 2 × 3 × 3 = $$2 \cdot 3^2$$
НОК(12; 18) = $$2^2 \cdot 3^2$$ = 4 × 9 = 36
48 | 2 24 | 2 12 | 2 6 | 2 3 | 3 1 | 54 | 2 27 | 3 9 | 3 3 | 3 1 |
48 = 2 × 2 × 2 × 2 × 3 = $$2^4 \cdot 3$$
54 = 2 × 3 × 3 × 3 = $$2 \cdot 3^3$$
НОК(48; 54) = $$2^4 \cdot 3^3$$ = 16 × 27 = 432