奇数富足
-
{945, 1575, 2205, 2835, 3465, 4095, 4725, 5355, 5775, 5985, 6435, 6615, 6825, 7245, 7425, 7875, 8085, 8415, 8505, 8925, 9135, 9555, 9765, 10395, 11025, 11655, 12285, 12705, 12915, 13545, 14175, ...}
目录
产生许多奇数丰富数的算术序列
-
一 ( n个 ) = 3 ⋅ 105 ⋅ (3 + 2 n个 ) = 3 ⋅ (315 + 210 n个 ) = 945 + 630 n个 = A005231号 (1) + 3 ⋅ 第页 4 # ⋅ n个 , 0 ≤ n个 ≤ 51,
-
一 ( n个 ) = 11 ⋅ 105 ⋅ (3 + 2 n个 ) = 11 ⋅ (315 + 210 n个 ) = 3465 + 2310 n个 = A005231号 (5) + 第页 5 # ⋅ n个 , 0 ≤ n个 ≤ 192,
奇数富足数的无穷大
奇本原富足数
-
{945, 1575, 2205, 3465, 4095, 5355, 5775, 5985, 6435, 6825, 7245, 7425, 8085, 8415, 8925, 9135, 9555, 9765, 11655, 12705, 12915, 13545, 14805, 15015, 16695, 18585, 19215, 19635, 21105, 21945, 22365, 22995, 23205, 24885, 25935, 26145, 26565, 28035, 28215, ...}
-
{2835, 4725, 6615, 7875, 8505, 10395, 11025, 12285, 14175, 15435, 16065, 17325, 17955, ...}
避免其他主要因素
避免单一素因子 第页
-
945 = 3 三 ⋅ 5 ⋅ 7 ,这是 1 标准 奇数富足数与 232 第 数量丰富。
-
5391411025 = 5 2 ⋅ 7 ⋅ 11 ⋅ 13 ⋅ 17 ⋅ 19 ⋅ 23 ⋅ 29 ,这是吗? 第个 奇数富足数和? 第个 数量丰富。
-
81081 = 3 4 ⋅ 7 ⋅ 11 ⋅ 13 ,这是 175 第个 奇数富足数和? 第个 数量丰富。
-
6435 = 3 2 ⋅ 5 ⋅ 11 ⋅ 13 ,这是 11 第个 奇数富足数与 1601 标准 数量丰富。
-
{5391411025, 81081, 6435, ...}
-
{12, 945, 20, 945, 12, 5391411025, 12, 945, 20, 81081, 12, 5391411025, 12, 6435, 56, 945, 12, 5391411025, 12, 81081, 20, 945, 12, 5391411025, 12, 945, 20, 6435, 12, ...}
-
{945, 945, 5391411025, 945, 81081, 5391411025, ...}
避免所有主要因素 第页
945 = 3 三 ⋅ 5 ⋅ 7 = 3 2 ⋅ ( 第页 4 ) # ( 第页 1 ) # ,
5391411025 = 5 2 ⋅ 7 ⋅ 11 ⋅ 13 ⋅ 17 ⋅ 19 ⋅ 23 ⋅ 29 = 5 ⋅ ( 第页 10 ) # ( 第页 2 ) # ,
-
20169691981106018776756331 = 7 2 ⋅ 11 2 ⋅ 13 ⋅ 17 ⋅ 19 ⋅ 23 ⋅ 29 ⋅ 31 ⋅ 37 ⋅ 41 ⋅ 43 ⋅ 47 ⋅ 53 ⋅ 59 ⋅ 61 ⋅ 67 = 7 ⋅ 11 ⋅ ( 第页 19 ) # ( 第页 三 ) # ,
-
49061132957714428902152118459264865645885092682687973 = 11 2 ⋅ 13 2 ⋅ 17 ⋅ 19 ⋅ 23 ⋅ 29 ⋅ 31 ⋅ 37 ⋅ 41 ⋅ 43 ⋅ 47 ⋅ 53 ⋅ 59 ⋅ 61 ⋅ 67 ⋅ 71 ⋅ 73 ⋅ 79 ⋅ 83 ⋅ 89 ⋅ 97 ⋅ 101 ⋅ 103 ⋅ 107 ⋅ 109 ⋅ 113 ⋅ 127 ⋅ 131 ⋅ 137 = 11 ⋅ 13 ⋅ ( 第页 33 ) # ( 第页 4 ) # ,
-
7970466327524571538225709545434506255970026969710012787303278390616918473506860039424701 = 13 2 ⋅ 17 2 ⋅ 19 ⋅ 23 ⋅ 29 ⋅ 31 ⋅ 37 ⋅ 41 ⋅ 43 ⋅ 47 ⋅ 53 ⋅ 59 ⋅ 61 ⋅ 67 ⋅ 71 ⋅ 73 ⋅ 79 ⋅ 83 ⋅ 89 ⋅ 97 ⋅ 101 ⋅ 103 ⋅ 107 ⋅ 109 ⋅ 113 ⋅ 127 ⋅ 131 ⋅ 137 ⋅ 139 ⋅ 149 ⋅ 151 ⋅ 157 ⋅ 163 ⋅ 167 ⋅ 173 ⋅ 179 ⋅ 181 ⋅ 191 ⋅ 193 ⋅ 197 ⋅ 199 ⋅ 211 ⋅ 223 ⋅ 227 = 13 ⋅ 17 ⋅ ( 第页 49 ) # ( 第页 5 ) # ,
序列
-
{12, 945, 5391411025, 20169691981106018776756331, 49061132957714428902152118459264865645885092682687973, 7970466327524571538225709545434506255970026969710012787303278390616918473506860039424701, ...}
-
{2, 5, 9, 18, 31, 46, 67, 91, 122, 157, 194, 238, 284, 334, 392, 455, 522, 591, 668, 748, 834, 929, 1028, 1133, 1241, 1352, 1469, 1594, 1727, 1869, 2019, 2163, 2315, 2471, 2636, ...}
-
{3, 5, 9, 18, 31, 46, 67, 91, 122, 157, 194, 238, 284, 334, 392, 455, 522, 591, 668, 748, 834, 929, 1028, 1133, 1241, 1352, 1469, 1594, 1727, 1869, 2019, 2163, 2315, 2471, 2636, ...}
-
{2, 3, 8, 16, 29, 44, ...}