21,384,976

2⁴ × 1336561

21,384,976 factors as 2^4 × 1336561. Its 10 positive divisors give a proper-divisor sum of 20,048,446, so this integer is deficient. The Collatz stopping time is 190 steps.

Prime Factor Structure

Factorization String 2^4 × 1336561

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 10

Divisor Sum (σ) 41,433,422

Proper Divisor Sum 20,048,446

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #21384971 ← → #21384983

Radix Representation

Decimal	21384976
Binary	1010001100100111100010000 (25 bits)
Octal	0o121447420
Hexadecimal	0x1464F10

Divisor Catalog (10)

1 2 4 8 16 1,336,561 2,673,122 5,346,244 10,692,488 21,384,976

Collatz Trajectory (190 steps to reach 1)

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

21,384,976 10,692,488 5,346,244 2,673,122 1,336,561 4,009,684 2,004,842 1,002,421 3,007,264 1,503,632 751,816 375,908 187,954 93,977 281,932 140,966 70,483 211,450 105,725 317,176 158,588 79,294 39,647 118,942 59,471 178,414 89,207 267,622 133,811 401,434 200,717 602,152 301,076 150,538 75,269 225,808 112,904 56,452 28,226 14,113 42,340 21,170 10,585 31,756 15,878 7,939 23,818 11,909 35,728 17,864 8,932 4,466 2,233 6,700 3,350 1,675 5,026 2,513 7,540 3,770

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