Marion Barry, the Democratic nominee for mayor in Tuesday's election, has raised five times as much money as his Republican opponent in the past 10 days and also erased a $9,000 debt from his primary campaign, according to financial reports filed yesterday.

Barry reported to the D.C. Board of Elections and Ethics yesterday that $63,082 had been contributed to his campaign since the last reports were filed 10 days ago, bringing to $424,141 the amount of money he has received since declaring his candidacy in January.

The most recent contributions make the Barry campaign the most expensive in city history, costing more than twice the nearly $200,000 that Mayor Walter E. Washington reported spending in 1974.

Arthur A. Fletcher, the Republican nominee, had expected to raise less than $50,000 for his campaign. But yesterday Fletcher reported receiving $11,923 in the past 10 days, bringing to $52,903 the amount of money he has raised for the primary and general elections.

Barry, who throughout the primary was shunned by large contributors, received 18 contributions of $500 each and four of $1,000 each. But he also received a larger number of smaller donations - contributions of $100 or less.

Many of the larger contributions apparently came in connection with an Oct. 10 $500-a-plate luncheon at which Barry supporters claimed to have raised $80,000.

The $1,000 contributions reported yesterday came from Berger-Berman Builders of Rockville, Cubic Corp. of San Diego, Calif., 4200 Cathedral Corp. and Dale Jernberg of Lanham Md.

Fletcher received almost one-third of his donations from persons outside the Washington metropolitan area. He received donations of $1,000 each from Jazz musician Lionel Hampton and E. Joseph Wheeler Jr. of Wheeler Industries.

Barry also yesterday announced a list of 22 Republicans he said were supporting his candidacy. The list is headed by Jackson R. Champion, who was defeated by Fletcher in the September Republican primary for mayor and lost to Mayor Walter E. Washington in the 1974 general election.

Fletcher is relying heavily on crossover votes from Democrats, who make up 80 percent of the registered voters in the District. Fletcher said yesterday, however, that he does not intend to reveal a list of Democrats supporting his candidacy before the elections.