%0 Journal Article %A N. de Bruijn %A J. van Lint %T On the number of integers ≤ x whose prime factors divide n %J Acta Arithmetica %D 1962 %P 349-356 %V 8 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-8-4-349-356/ %R 10.4064/aa-8-4-349-356 %G en %F 10_4064_aa_8_4_349_356