#### Answer

1, 19

#### Work Step by Step

19 = 1 * 19. 1 and 19 are the only factors.

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

1, 19

19 = 1 * 19. 1 and 19 are the only factors.

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