naravno število From Wikipedia, the free encyclopedia
12 (dvánajst ali dvanájst) je naravno število, za katero velja 12 = 11 + 1 = 13 − 1.
| |||
Glavni števnik | dvanajst | ||
Vrstilni števnik | dvanajsti | ||
Številski sistem | dvanajstiški | ||
Razcep | |||
Rimska številka | XII | ||
Dvojiško | 1100 | ||
Šestnajstiško | C | ||
Matematične lastnosti | |||
---|---|---|---|
φ(12) = 4 | |||
τ(12) = 6 {1, 2, 3, 4, 6, 12} | |||
σ(12) = 28 | |||
π(12) = 5 | |||
μ(12) = 0 | |||
M(12) = -2 |
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