2,531,990

2 × 5 × 29 × 8731

2,531,990 factors as 2 × 5 × 29 × 8731. Its 16 positive divisors give a proper-divisor sum of 2,183,290, so this integer is deficient. The Collatz stopping time is 81 steps.

Prime Factor Structure

Factorization String 2 × 5 × 29 × 8731

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 4,715,280

Proper Divisor Sum 2,183,290

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #2531989 ← → #2531993

Radix Representation

Decimal	2531990
Binary	1001101010001010010110 (22 bits)
Octal	0o11521226
Hexadecimal	0x26A296

Divisor Catalog (16)

1 2 5 10 29 58 145 290 8,731 17,462 43,655 87,310 253,199 506,398 1,265,995 2,531,990

Collatz Trajectory (81 steps to reach 1)

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

2,531,990 1,265,995 3,797,986 1,898,993 5,696,980 2,848,490 1,424,245 4,272,736 2,136,368 1,068,184 534,092 267,046 133,523 400,570 200,285 600,856 300,428 150,214 75,107 225,322 112,661 337,984 168,992 84,496 42,248 21,124 10,562 5,281 15,844 7,922 3,961 11,884 5,942 2,971 8,914 4,457 13,372 6,686 3,343 10,030 5,015 15,046 7,523 22,570 11,285 33,856 16,928 8,464 4,232 2,116 1,058 529 1,588 794 397 1,192 596 298 149 448

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