Compare 6 vs 21

Property621
Typesemiprimesemiprime
Unique factors22
Total factors22
Prime factorization21 × 3131 × 71
Prime factorization2 × 33 × 7
Divisors count44
Divisors1, 2, 3, 61, 3, 7, 21
Number of properties11
Semiprimes2nd7th
Roman numberalsVIXXI
Base 21102101012
Base 32032103
Base 41241114
Base 5115415
Base 6106336
Base 767307
Base 868258
Base 969239
Base 106102110
Base 116111a11
Base 126121912
Base 136131813
Base 146141714
Base 156151615
Base 166161516
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