λ
Sequence Observatory

220,544

27 × 1723
Deficient Even Composite

Starting at 220,544, the Collatz iteration reaches 1 after 62 steps. The first transition is 110272; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2^7 × 1723
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 439,620
Proper Divisor Sum 219,076
Digit Sum / Digital Root 17 (Root: 8)
Adjacent Primes #220543 ← → #220553

Radix Representation

Decimal 220544
Binary 110101110110000000 (18 bits)
Octal 0o656600
Hexadecimal 0x35D80

Divisor Catalog (16)

1 2 4 8 16 32 64 128 1,723 3,446 6,892 13,784 27,568 55,136 110,272 220,544

Collatz Trajectory (62 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

220,544 110,272 55,136 27,568 13,784 6,892 3,446 1,723 5,170 2,585 7,756 3,878 1,939 5,818 2,909 8,728 4,364 2,182 1,091 3,274 1,637 4,912 2,456 1,228 614 307 922 461 1,384 692 346 173 520 260 130 65 196 98 49 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8

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