Compare 21 vs 24

Property2124
Typesemiprimecomposite number
Unique factors22
Total factors24
Prime factorization31 × 7123 × 31
Prime factorization3 × 72 × 2 × 2 × 3
Divisors count48
Divisors1, 3, 7, 211, 2, 3, 4, 6, 8, 12, 24
Number of properties10
Semiprimes7th 
Roman numberalsXXIXXIV
Base 2101012110002
Base 321032203
Base 411141204
Base 5415445
Base 6336406
Base 7307337
Base 8258308
Base 9239269
Base 1021102410
Base 111a112211
Base 1219122012
Base 1318131b13
Base 1417141a14
Base 1516151915
Base 1615161816
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