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A216058 Greater of friendly pairs where both terms belong to A014574. 1
600, 1488, 19890, 69030, 77688, 153888, 175392, 204750, 263400, 296478, 328848, 373230, 385392, 397152, 402528, 450600, 510048, 523488, 609600, 632352, 710910, 965400, 1101672, 1109400, 1128600, 1163232, 1206768, 1251432, 1318410, 1393938, 1423968, 1427400 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
In the uploaded table, only 2 instances are primitive friendly: {1488, 270} and {52717500, 2418000}.
LINKS
Michel Marcus, The friendly pairs
EXAMPLE
600 is in the sequence, because 600 and 240 belong to A014574 and sigma(600)/600 = sigma(240)/240 = 31/10.
CROSSREFS
Cf. A014574.
Sequence in context: A172244 A090222 A361900 * A157918 A092183 A048530
KEYWORD
nonn
AUTHOR
Michel Marcus, Aug 31 2012
STATUS
approved

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Last modified May 27 02:41 EDT 2024. Contains 372847 sequences. (Running on oeis4.)