Pre flop play with AKo multiway

[TheAmp]

Hi all,
Here is an intersting hand I played at party 50+5 10 player Sng.
5 players left.BB is 200. I was delt Ako, with 1667 chips. 2 players ahead bet 880 (1 all in).

Q: fold, call, or raise allin?
folding seems wrong since I am likely to dominate at least one hand. on the other hand, if I am against atleast one pocket pair (very likely) my winning chances are between 33%-37%, not a great deal when half my stack is risked. if I am dominating both hands my winning chances are around 50% (I checked the odds with a poker calculator). this might lead to the conclusion that folding here is the best play (and this is now obvios if the hand was AJ or less).
raising is useless since you will be called with all your chips at risk (very small marginal gain).

what do you think?

here is the full hand data:

NL Hold'em $50 Buy-in + $5 Entry Fee Trny:8316400 Level:5 Blinds(100/200) - Saturday, January 01, 11:53:13 EDT 2005
Table Table 11547 (Real Money)
Seat 9 is the button
Total number of players : 5
Seat 1: excon88 ( $2030 )
Seat 2: JESTERJOHN ( $2743 )
Seat 3: dmenh ( $880 )
Seat 6: pocketset77 ( $2680 )
Seat 9: Briti ( $1667 )
Trny:8316400 Level:5
Blinds(100/200)
There is no Small Blind in this hand as the Big Blind of the previous hand left the table.
** Dealing down cards **
Dealt to Briti [ As Kc ]
JESTERJOHN folds.
dmenh is all-In [880]
pocketset77 calls [880].
Briti calls [880].
excon88 folds.
** Dealing Flop ** [ 3h, 8s, Td ]
pocketset77 checks.
Briti checks.
** Dealing Turn ** [ Qh ]
pocketset77 bets [800].
Briti folds.
** Dealing River ** [ 2c ]
pocketset77 shows [ 8h, 8c ] three of a kind, eights.
dmenh shows [ 5c, 5s ] a pair of fives.