divisible; separable
Technical term used in mathematics, logic, and formal contexts to describe something that can be divided or separated into parts.
This number is divisible by 3.
Investigate the properties of separable sets.
不可分 means something cannot be divided or separated, while 可分 (a formal/legal term) describes something that can be divided.
Sino-Japanese compound of 可 (ka, 'possible') and 分 (bun, 'divide'). The reading かぶん follows standard on'yomi.