18819918

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:143

約数の個数: 128

約数和(自身を含む): 50803200

約数和(自身を除く): 31983282

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 19, 26, 27, 34, 38, 39, 51, 54, 57, 78, 83, 102, 114, 117, 153, 166, 171, 221, 234, 247, 249, 306, 323, 342, 351, 442, 459, 494, 498, 513, 646, 663, 702, 741, 747, 918, 969, 1026, 1079, 1326, 1411, 1482, 1494, 1577, 1938, 1989, 2158, 2223, 2241, 2822, 2907, 3154, 3237, 3978, 4199, 4233, 4446, 4482, 4731, 5814, 5967, 6474, 6669, 8398, 8466, 8721, 9462, 9711, 11934, 12597, 12699, 13338, 14193, 17442, 18343, 19422, 20501, 25194, 25398, 26809, 28386, 29133, 36686, 37791, 38097, 41002, 42579, 53618, 55029, 58266, 61503, 75582, 76194, 80427, 85158, 110058, 113373, 123006, 160854, 165087, 184509, 226746, 241281, 330174, 348517, 369018, 482562, 495261, 553527, 697034, 723843, 990522, 1045551, 1107054, 1447686, 2091102, 3136653, 6273306, 9409959, 18819918]

約数ペア:

[(1, 18819918), (2, 9409959), (3, 6273306), (6, 3136653), (9, 2091102), (13, 1447686), (17, 1107054), (18, 1045551), (19, 990522), (26, 723843), (27, 697034), (34, 553527), (38, 495261), (39, 482562), (51, 369018), (54, 348517), (57, 330174), (78, 241281), (83, 226746), (102, 184509), (114, 165087), (117, 160854), (153, 123006), (166, 113373), (171, 110058), (221, 85158), (234, 80427), (247, 76194), (249, 75582), (306, 61503), (323, 58266), (342, 55029), (351, 53618), (442, 42579), (459, 41002), (494, 38097), (498, 37791), (513, 36686), (646, 29133), (663, 28386), (702, 26809), (741, 25398), (747, 25194), (918, 20501), (969, 19422), (1026, 18343), (1079, 17442), (1326, 14193), (1411, 13338), (1482, 12699), (1494, 12597), (1577, 11934), (1938, 9711), (1989, 9462), (2158, 8721), (2223, 8466), (2241, 8398), (2822, 6669), (2907, 6474), (3154, 5967), (3237, 5814), (3978, 4731), (4199, 4482), (4233, 4446)]