HP 49G User Manual page 24

FACTORMOD(X^2+2)
(X+1)*(X-1)
FACTORS
FACTORS(100)
{5 2. 2 2.}
FACTORS(X^2+4*X+4)
{X+2,2.}
FCOEF
1-24
2
x + 4x + 4
Command Reference: Part A (1.1)