Τ痲だ秆

Τ计ノだ秆 (Prime Factorization) ㄓボはノ计 (Digit) 4 = 22セㄓ琌计だ秆Α玱ノ 2 计癸单计и嘿揣繬计 (Wasteful Number) 4, 6, 8, 9, 12, 18, 20, 22, 24 ...... (把吹计 A046760)

はぇ璝ノだ秆ㄓボ琌玱计 125 = 53 セㄓ琌计だ秆Αノ 2 计и嘿单计竒蕾计 (Economical Number)  125, 128, 243, 256, 343, 512, 625, 729, ...... (把吹计 A046759)

┏硈尿竒蕾计计 (Sequence of Consecutive Economical Numbers) Τ娩獀 (R. G. E. Pinch) 獽т兵 9 计计 1034429177995381247獺ヴ種计

璝ォだ秆㎝ㄓ计计单杠单计嘿单计计 (Equidigital Number)陪礛τ┮Τ计ョ琌单计计单计计讽いョΤ计单计计ㄒΤ 1, 2, 3, 5, 7, 10, 11, 13, 14, 15, 16, 17, 19, 21, 23, ...... (把吹计 A046758)

把σゅ膍の呼

Weisstein, E. W. "Economical Number." From MathWorld. http://mathworld.wolfram.com/EconomicalNumber.html.

Weisstein, E. W. "Equidigital Number." From MathWorld. http://mathworld.wolfram.com/EquidigitalNumber.html.

Weisstein, E. W. "Wasteful Number." From MathWorld. http://mathworld.wolfram.com/WastefulNumber.html.

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