1. Numbers
  2. Compare 21977 vs 21980

Compare 21977 vs 21980

Property2197721980
Typeprimecomposite number
Unique factors14
Total factors15
Prime factorization21977122 × 51 × 71 × 1571
Prime factorization219772 × 2 × 5 × 7 × 157
Divisors count224
Divisors1, 219771, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 4396, 5495, 10990, 21980
Number of properties60
Chen primes1207th 
Harmonic primes906th 
Isolated primes1719th 
Long primes931st 
Primes2462nd 
Pythagorean primes1222nd 
Roman numberals  
Base 210101011101100121010101110111002
Base 31010010222310100110023
Base 4111131214111131304
Base 51200402512004105
Base 624542562454326
Base 712103471210407
Base 8527318527348
Base 9331289331329
Base 1021977102198010
Base 111556a111557211
Base 1210875121087812
Base 13a00713a00a13
Base 14801b14802014
Base 1567a21567a515
Base 1655d91655dc16
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