\[\boxed{\mathbf{2.}\mathbf{16}\mathbf{.\ ОК\ ГДЗ - домашка\ на\ }5}\]
Пояснение.
Решение.
\[\textbf{а)}\ 14 = 2 \cdot 7\]
\[21 = 3 \cdot 7\]
\[35 = 5 \cdot 7\]
\[77 = 11 \cdot 7\]
\[91 = 13 \cdot 7\]
\[\textbf{б)}\ 38 = 2 \cdot 19\]
\[57 = 3 \cdot 19\]
\[95 = 5 \cdot 19\]
\[\textbf{в)}\ 58 = 2 \cdot 29\]
\[87 = 3 \cdot 29\]
\[\textbf{г)}\ 86 = 2 \cdot 43\]