638403458

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:556

約数の個数: 96

約数和(自身を含む): 1300147200

約数和(自身を除く): 661743742

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 49, 71, 77, 98, 133, 142, 154, 209, 266, 418, 439, 497, 539, 781, 878, 931, 994, 1078, 1349, 1463, 1562, 1862, 2698, 2926, 3073, 3479, 4829, 5467, 6146, 6958, 8341, 9443, 9658, 10241, 10934, 14839, 16682, 18886, 20482, 21511, 29678, 31169, 33803, 38269, 43022, 58387, 62338, 66101, 67606, 76538, 91751, 103873, 116774, 132202, 183502, 207746, 218183, 236621, 342859, 408709, 436366, 473242, 592211, 642257, 685718, 727111, 817418, 1184422, 1284514, 1454222, 1527281, 2400013, 3054562, 4145477, 4495799, 4800026, 6514321, 8290954, 8991598, 13028642, 16800091, 29018339, 33600182, 45600247, 58036678, 91200494, 319201729, 638403458]

約数ペア:

[(1, 638403458), (2, 319201729), (7, 91200494), (11, 58036678), (14, 45600247), (19, 33600182), (22, 29018339), (38, 16800091), (49, 13028642), (71, 8991598), (77, 8290954), (98, 6514321), (133, 4800026), (142, 4495799), (154, 4145477), (209, 3054562), (266, 2400013), (418, 1527281), (439, 1454222), (497, 1284514), (539, 1184422), (781, 817418), (878, 727111), (931, 685718), (994, 642257), (1078, 592211), (1349, 473242), (1463, 436366), (1562, 408709), (1862, 342859), (2698, 236621), (2926, 218183), (3073, 207746), (3479, 183502), (4829, 132202), (5467, 116774), (6146, 103873), (6958, 91751), (8341, 76538), (9443, 67606), (9658, 66101), (10241, 62338), (10934, 58387), (14839, 43022), (16682, 38269), (18886, 33803), (20482, 31169), (21511, 29678)]