21,752,013

3 × 7250671

21,752,013 factors as 3 × 7250671. Its 4 positive divisors give a proper-divisor sum of 7,250,675, so this integer is deficient. The Collatz stopping time is 141 steps.

Prime Factor Structure

Factorization String 3 × 7250671

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 29,002,688

Proper Divisor Sum 7,250,675

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #21752009 ← → #21752021

Radix Representation

Decimal	21752013
Binary	1010010111110100011001101 (25 bits)
Octal	0o122764315
Hexadecimal	0x14BE8CD

Divisor Catalog (4)

1 3 7,250,671 21,752,013

Collatz Trajectory (141 steps to reach 1)

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

21,752,013 65,256,040 32,628,020 16,314,010 8,157,005 24,471,016 12,235,508 6,117,754 3,058,877 9,176,632 4,588,316 2,294,158 1,147,079 3,441,238 1,720,619 5,161,858 2,580,929 7,742,788 3,871,394 1,935,697 5,807,092 2,903,546 1,451,773 4,355,320 2,177,660 1,088,830 544,415 1,633,246 816,623 2,449,870 1,224,935 3,674,806 1,837,403 5,512,210 2,756,105 8,268,316 4,134,158 2,067,079 6,201,238 3,100,619 9,301,858 4,650,929 13,952,788 6,976,394 3,488,197 10,464,592 5,232,296 2,616,148 1,308,074 654,037 1,962,112 981,056 490,528 245,264 122,632 61,316 30,658 15,329 45,988 22,994

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