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naravno število From Wikipedia, the free encyclopedia
80 (ósemdeset) je naravno število, za katero velja velja 80 = 79 + 1 = 81 - 1.
| |||
Glavni števnik | osemdeset | ||
Vrstilni števnik | osemdeset | ||
Razcep | |||
Rimska številka | LXXX | ||
Dvojiško | 1010000 | ||
Šestnajstiško | 50 | ||
Matematične lastnosti | |||
---|---|---|---|
φ(80) = 32 | |||
τ(80) = 10 {1, 2, 4, 5, 8, 10, 16, 20, 40, 80} | |||
σ(80) = 186 | |||
π(80) = 22 | |||
μ(80) = 0 | |||
M(80) = -4 |
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