factor - factor numbers
factor [NUMBER]...
factor OPTION
Print the prime factors of each specified integer NUMBER. If none are specified on the command line, read them from standard input.
display this help and exit
output version information and exit
Written by Paul Rubin, Torbjorn Granlund, and Niels Moller.
GNU coreutils online help: https://www.gnu.org/software/coreutils/
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Copyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later https://gnu.org/licenses/gpl.html.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
Full documentation https://www.gnu.org/software/coreutils/factor
or available locally via: info '(coreutils) factor invocation'