The opponents running for the Montgomery County executive have poured $117,556 into their campaigns while candidates for County Council have spend $48,000, according to financial reports filed with the Supervisors of Elections this week.

For the reporting period through Oct. 24, State Sen. Charles W. Gilchrist, Democratic candidate for county executive, said he had raised $82,973 and spent $80,717 since he began the race 17 months ago.

Gilchrist raised and spent two-thirds of his war chest during his primary battle against Royce Hanson and John Menke.

Republican executive candidate Richmond M. Keeney, a planning commissioner, reported total income of $38,602 and expenditures of $36,839. Keeney, who was a heavy favorite in the three-way Republican primary, has more than doubled his income and expenditures in his race against Gilchrist. Republicans are outnumbered by Democrats 2-to-1 in the county.

Both candidates have gone into debt, according to their statesments. Gilchrist owes himself $17,500; his campaign manager, Jack Sexton and his wife, $1,900, and his promotional agency, Earl Palmer Brown, $6,274. Keeney lent himself $5,025 and also owes $4,458 in unpaid media bills.

Keeney's campaign chest has been a heavy favorite of business and development interests, while Gilchrist has been a recipient of considerable support from his own legal profession, labor and some other special interests homes, utilities and the Police Political Action Committee (which gave him $800).

The council races have shown some dramatic contrasts in fund-raising. Faor example, Republican Bob Brennan, a builder, has raised $15,842 and spent $12,753, mostly in radio and newspaper advertising, in his bid to become the first Republican to serve on the council in eight years. His Democratic opponent, social worker Ruth Spector, has raised $4,414 and spent $2,780, and has lent her campaign $4,500.

Several other council candidates reported they had lent their campaigns large amounts.

Democrat Mike Gudis, for example, reported loans of $16,500 from his pocket. He poured $12,593 into his pimary battle to defeat incumbent Jane Anne Moore. Since the primary, he has raised $11,575 and spent $10,040.His own loans covered the entire peiord. Much of the rest of his income came from property owners and managers who wanted to oust Moore because of her staunch support of rent controls.

His Republican opponent, Barrie Ciliberti, has raised $6,795 and spent $4,851 since the primary. He also has invested $3,550 of his own money into his campaign.

In other financial statements since the primary: incumbent Democrat Neal Potter has raised $4,604 and spent $2,980, in addition to lending his campaign $2,400, in a race to keep his sent against Republican challenger Jackie Simmon. Simon has raised $3,451, primarily from the business community, and spent $2,788. She reported $5,348 in debts, including a $1,005 loan from her own pocket.

Incumbent Ester Gelman, a Democrat, has raised $7,549 and spent $3,408 since the primary. The report of her Republican challenger, Richard I. Bogley Jr., who has been ill, was not immediately available.

Incumbent Democrat Elizabeth Scull has spent $1,970; her Republican challenger, Barbara Bailey, has spent $4 and received a $100 loan. In the atlarge race, Democrat Rose Crenca has spent $2,485 and lent her campaign $3,544; Democrat Scott Fosler has spent $3,835 and lent his campaign $2,600; Republican Taft Holland has spent $834 and is indebted $555 to two supporters, and Republican Malcolm Lawrence has spent $1,222 and ha lent $400 to his campaign.