Integer Profile
81,690
2 × 3 × 5 × 7 × 389
Prime factors, divisor sums, positional representations and sequence properties for 81,690. The prime factorization is 2 × 3 × 5 × 7 × 389.
Number of positive divisors: 32. Showing the recorded part of the sequence: 63.
Collatz trajectory (63 steps)
Even: n → n/2; Odd: n → 3n + 1
81,69040,845122,53661,26830,63415,31745,95222,97611,4885,7442,8721,4367183591,0785391,6188092,4281,2146071,8229112,7341,3674,1022,0516,1543,0779,2324,6162,3081,1545771,7328664331,3006503259764882441226118492462370351065316080402010516
Showing 60 of 60.
Prime factorization
- Factorization
- 2 × 3 × 5 × 7 × 389
- Distinct prime factors
- 5
- Perfect square
- No
- Parity
- Even
Arithmetic properties
- Positive divisors
- 32
- Divisor sum
- 224,640
- Proper-divisor sum
- 142,950
- Digit sum
- 24
- Digital root
- 6
Number bases
- Decimal
- 81690
- Binary
- 10011111100011010 (17 bits)
- Octal
- 0o237432
- Hexadecimal
- 0x13F1A
Divisor catalog (32)
12356710141521303542701052103897781,1671,9452,3342,7233,8905,4465,8358,16911,67013,61516,33827,23040,84581,690
Showing 32 of 32.
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