21,121,924

2² × 5280481

21,121,924 factors as 2^2 × 5280481. Its 6 positive divisors give a proper-divisor sum of 15,841,450, so this integer is deficient. The Collatz stopping time is 234 steps.

Prime Factor Structure

Factorization String 2^2 × 5280481

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 36,963,374

Proper Divisor Sum 15,841,450

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #21121913 ← → #21121937

Radix Representation

Decimal	21121924
Binary	1010000100100101110000100 (25 bits)
Octal	0o120445604
Hexadecimal	0x1424B84

Divisor Catalog (6)

1 2 4 5,280,481 10,560,962 21,121,924

Collatz Trajectory (234 steps to reach 1)

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

21,121,924 10,560,962 5,280,481 15,841,444 7,920,722 3,960,361 11,881,084 5,940,542 2,970,271 8,910,814 4,455,407 13,366,222 6,683,111 20,049,334 10,024,667 30,074,002 15,037,001 45,111,004 22,555,502 11,277,751 33,833,254 16,916,627 50,749,882 25,374,941 76,124,824 38,062,412 19,031,206 9,515,603 28,546,810 14,273,405 42,820,216 21,410,108 10,705,054 5,352,527 16,057,582 8,028,791 24,086,374 12,043,187 36,129,562 18,064,781 54,194,344 27,097,172 13,548,586 6,774,293 20,322,880 10,161,440 5,080,720 2,540,360 1,270,180 635,090 317,545 952,636 476,318 238,159 714,478 357,239 1,071,718 535,859 1,607,578 803,789

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