28357329

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:131

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 26800431

約数列:

[1, 3, 7, 11, 13, 19, 21, 33, 39, 49, 57, 71, 77, 91, 133, 143, 147, 209, 213, 231, 247, 273, 399, 429, 497, 539, 627, 637, 741, 781, 923, 931, 1001, 1349, 1463, 1491, 1617, 1729, 1911, 2343, 2717, 2769, 2793, 3003, 3479, 4047, 4389, 5187, 5467, 6461, 7007, 8151, 9443, 10153, 10241, 10437, 12103, 14839, 16401, 17537, 19019, 19383, 21021, 28329, 30459, 30723, 36309, 38269, 44517, 45227, 52611, 57057, 66101, 71071, 103873, 114807, 122759, 133133, 135681, 192907, 198303, 213213, 311619, 368277, 399399, 497497, 578721, 727111, 859313, 1350349, 1492491, 2181333, 2577939, 4051047, 9452443, 28357329]

約数ペア:

[(1, 28357329), (3, 9452443), (7, 4051047), (11, 2577939), (13, 2181333), (19, 1492491), (21, 1350349), (33, 859313), (39, 727111), (49, 578721), (57, 497497), (71, 399399), (77, 368277), (91, 311619), (133, 213213), (143, 198303), (147, 192907), (209, 135681), (213, 133133), (231, 122759), (247, 114807), (273, 103873), (399, 71071), (429, 66101), (497, 57057), (539, 52611), (627, 45227), (637, 44517), (741, 38269), (781, 36309), (923, 30723), (931, 30459), (1001, 28329), (1349, 21021), (1463, 19383), (1491, 19019), (1617, 17537), (1729, 16401), (1911, 14839), (2343, 12103), (2717, 10437), (2769, 10241), (2793, 10153), (3003, 9443), (3479, 8151), (4047, 7007), (4389, 6461), (5187, 5467)]