18904886

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:130

約数の個数: 96

約数和(自身を含む): 41368320

約数和(自身を除く): 22463434

約数列:

[1, 2, 7, 11, 13, 14, 19, 22, 26, 38, 49, 71, 77, 91, 98, 133, 142, 143, 154, 182, 209, 247, 266, 286, 418, 494, 497, 539, 637, 781, 923, 931, 994, 1001, 1078, 1274, 1349, 1463, 1562, 1729, 1846, 1862, 2002, 2698, 2717, 2926, 3458, 3479, 5434, 5467, 6461, 6958, 7007, 9443, 10153, 10241, 10934, 12103, 12922, 14014, 14839, 17537, 18886, 19019, 20306, 20482, 24206, 29678, 35074, 38038, 38269, 45227, 66101, 71071, 76538, 90454, 103873, 122759, 132202, 133133, 142142, 192907, 207746, 245518, 266266, 385814, 497497, 727111, 859313, 994994, 1350349, 1454222, 1718626, 2700698, 9452443, 18904886]

約数ペア:

[(1, 18904886), (2, 9452443), (7, 2700698), (11, 1718626), (13, 1454222), (14, 1350349), (19, 994994), (22, 859313), (26, 727111), (38, 497497), (49, 385814), (71, 266266), (77, 245518), (91, 207746), (98, 192907), (133, 142142), (142, 133133), (143, 132202), (154, 122759), (182, 103873), (209, 90454), (247, 76538), (266, 71071), (286, 66101), (418, 45227), (494, 38269), (497, 38038), (539, 35074), (637, 29678), (781, 24206), (923, 20482), (931, 20306), (994, 19019), (1001, 18886), (1078, 17537), (1274, 14839), (1349, 14014), (1463, 12922), (1562, 12103), (1729, 10934), (1846, 10241), (1862, 10153), (2002, 9443), (2698, 7007), (2717, 6958), (2926, 6461), (3458, 5467), (3479, 5434)]