Integer Profile
21,471
3 × 17 × 421
Prime factors, divisor sums, positional representations and sequence properties for 21,471. The prime factorization is 3 × 17 × 421.
Number of positive divisors: 8. Showing the recorded part of the sequence: 87.
Prime factorization
- Factorization
- 3 × 17 × 421
- Distinct prime factors
- 3
- Perfect square
- No
- Parity
- Odd
Arithmetic properties
- Positive divisors
- 8
- Divisor sum
- 30,384
- Proper-divisor sum
- 8,913
- Digit sum
- 15
- Digital root
- 6
Number bases
- Decimal
- 21471
- Binary
- 101001111011111 (15 bits)
- Octal
- 0o51737
- Hexadecimal
- 0x53DF
Divisor catalog (8)
1317514211,2637,15721,471
Showing 8 of 8.
Collatz trajectory (87 steps)
Even: n → n/2; Odd: n → 3n + 1
21,47164,41432,20796,62248,311144,93472,467217,402108,701326,104163,05281,52640,763122,29061,145183,43691,71845,859137,57868,789206,368103,18451,59225,79612,8986,44919,3489,6744,83714,5127,2563,6281,8149072,7221,3614,0842,0421,0213,0641,5327663831,1505751,7268632,5901,2953,8861,9435,8302,9158,7464,37313,1206,5603,2801,640820
Showing 60 of 60.
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