20,445
3 × 5 × 29 × 47
Deficient
Odd
Composite
20,445 has the prime decomposition 3 × 5 × 29 × 47. Its 4 distinct prime factors produce 16 positive divisors.
Resources
Prime Factor Structure
Factorization String
3 × 5 × 29 × 47
Distinct Prime Factors
4
Square Status
No
Abundance Measure
Deficient
Analytical Properties
Total Divisors
16
Divisor Sum (σ)
34,560
Proper Divisor Sum
14,115
Digit Sum / Digital Root
15 (Root: 6)
Adjacent Primes
#20443 ← → #20477
Radix Representation
| Decimal | 20445 |
| Binary | 100111111011101 (15 bits) |
| Octal | 0o47735 |
| Hexadecimal | 0x4FDD |
Divisor Catalog (5 of 16)
Collatz Trajectory (61 steps to reach 1)
Iterative sequence n → n/2 (if even) or 3n+1 (if odd):
Showing the first 5 trajectory entries; the stopping-time total above is unchanged.