Compare 15 vs 40

Property1540
Typesemiprimecomposite number
Unique factors22
Total factors24
Prime factorization31 × 5123 × 51
Prime factorization3 × 52 × 2 × 2 × 5
Divisors count48
Divisors1, 3, 5, 151, 2, 4, 5, 8, 10, 20, 40
Number of properties10
Semiprimes6th 
Roman numberalsXVXL
Base 2111121010002
Base 3120311113
Base 43342204
Base 53051305
Base 62361046
Base 7217557
Base 8178508
Base 9169449
Base 1015104010
Base 1114113711
Base 1213123412
Base 1312133113
Base 1411142c14
Base 1510152a15
Base 16f162816
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