1,990,676

2² × 29 × 131²

1,990,676 factors as 2^2 × 29 × 131^2. Its 18 positive divisors give a proper-divisor sum of 1,640,854, so this integer is deficient. The Collatz stopping time is 91 steps.

Prime Factor Structure

Factorization String 2^2 × 29 × 131^2

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 3,631,530

Proper Divisor Sum 1,640,854

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #1990661 ← → #1990679

Radix Representation

Decimal	1990676
Binary	111100110000000010100 (21 bits)
Octal	0o7460024
Hexadecimal	0x1E6014

Divisor Catalog (18)

1 2 4 29 58 116 131 262 524 3,799 7,598 15,196 17,161 34,322 68,644 497,669 995,338 1,990,676

Collatz Trajectory (91 steps to reach 1)

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

1,990,676 995,338 497,669 1,493,008 746,504 373,252 186,626 93,313 279,940 139,970 69,985 209,956 104,978 52,489 157,468 78,734 39,367 118,102 59,051 177,154 88,577 265,732 132,866 66,433 199,300 99,650 49,825 149,476 74,738 37,369 112,108 56,054 28,027 84,082 42,041 126,124 63,062 31,531 94,594 47,297 141,892 70,946 35,473 106,420 53,210 26,605 79,816 39,908 19,954 9,977 29,932 14,966 7,483 22,450 11,225 33,676 16,838 8,419 25,258 12,629

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