21922173

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 41109120

約数和(自身を除く): 19186947

約数列:

[1, 3, 7, 9, 13, 21, 29, 39, 63, 71, 87, 91, 117, 169, 203, 213, 261, 273, 377, 497, 507, 609, 639, 819, 923, 1131, 1183, 1491, 1521, 1827, 2059, 2639, 2769, 3393, 3549, 4473, 4901, 6177, 6461, 7917, 8307, 10647, 11999, 14413, 14703, 18531, 19383, 23751, 26767, 34307, 35997, 43239, 44109, 58149, 80301, 83993, 102921, 107991, 129717, 187369, 240903, 251979, 308763, 347971, 562107, 755937, 1043913, 1686321, 2435797, 3131739, 7307391, 21922173]

約数ペア:

[(1, 21922173), (3, 7307391), (7, 3131739), (9, 2435797), (13, 1686321), (21, 1043913), (29, 755937), (39, 562107), (63, 347971), (71, 308763), (87, 251979), (91, 240903), (117, 187369), (169, 129717), (203, 107991), (213, 102921), (261, 83993), (273, 80301), (377, 58149), (497, 44109), (507, 43239), (609, 35997), (639, 34307), (819, 26767), (923, 23751), (1131, 19383), (1183, 18531), (1491, 14703), (1521, 14413), (1827, 11999), (2059, 10647), (2639, 8307), (2769, 7917), (3393, 6461), (3549, 6177), (4473, 4901)]