1,990,965

3 × 5 × 331 × 401

1,990,965 factors as 3 × 5 × 331 × 401. Its 16 positive divisors give a proper-divisor sum of 1,212,171, so this integer is deficient. The Collatz stopping time is 153 steps.

Prime Factor Structure

Factorization String 3 × 5 × 331 × 401

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,203,136

Proper Divisor Sum 1,212,171

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #1990957 ← → #1990969

Radix Representation

Decimal	1990965
Binary	111100110000100110101 (21 bits)
Octal	0o7460465
Hexadecimal	0x1E6135

Divisor Catalog (16)

1 3 5 15 331 401 993 1,203 1,655 2,005 4,965 6,015 132,731 398,193 663,655 1,990,965

Collatz Trajectory (153 steps to reach 1)

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

1,990,965 5,972,896 2,986,448 1,493,224 746,612 373,306 186,653 559,960 279,980 139,990 69,995 209,986 104,993 314,980 157,490 78,745 236,236 118,118 59,059 177,178 88,589 265,768 132,884 66,442 33,221 99,664 49,832 24,916 12,458 6,229 18,688 9,344 4,672 2,336 1,168 584 292 146 73 220 110 55 166 83 250 125 376 188 94 47 142 71 214 107 322 161 484 242 121 364

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