257745488

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:87

約数の個数: 240

約数和(自身を含む): 724328640

約数和(自身を除く): 466583152

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 19, 22, 26, 28, 38, 44, 49, 52, 56, 76, 77, 88, 91, 98, 104, 112, 121, 133, 143, 152, 154, 176, 182, 196, 208, 209, 242, 247, 266, 286, 304, 308, 364, 392, 418, 484, 494, 532, 539, 572, 616, 637, 728, 784, 836, 847, 931, 968, 988, 1001, 1064, 1078, 1144, 1232, 1274, 1331, 1456, 1463, 1573, 1672, 1694, 1729, 1862, 1936, 1976, 2002, 2128, 2156, 2288, 2299, 2548, 2662, 2717, 2926, 3146, 3344, 3388, 3458, 3724, 3952, 4004, 4312, 4598, 5096, 5324, 5434, 5852, 5929, 6292, 6776, 6916, 7007, 7448, 8008, 8624, 9196, 9317, 10192, 10241, 10648, 10868, 11011, 11704, 11858, 12103, 12584, 13552, 13832, 14014, 14896, 16016, 16093, 17303, 18392, 18634, 19019, 20482, 21296, 21736, 22022, 23408, 23716, 24206, 25168, 25289, 27664, 28028, 29887, 32186, 34606, 36784, 37268, 38038, 40964, 43472, 44044, 47432, 48412, 50578, 56056, 59774, 64372, 65219, 69212, 74536, 76076, 77077, 81928, 88088, 94864, 96824, 101156, 112112, 112651, 119548, 121121, 128744, 130438, 133133, 138424, 149072, 152152, 154154, 163856, 176176, 177023, 193648, 202312, 209209, 225302, 239096, 242242, 257488, 260876, 266266, 276848, 304304, 308308, 328757, 354046, 404624, 418418, 450604, 478192, 484484, 521752, 532532, 616616, 657514, 708092, 836836, 847847, 901208, 968968, 1043504, 1065064, 1233232, 1239161, 1315028, 1416184, 1464463, 1673672, 1695694, 1802416, 1937936, 2130128, 2301299, 2478322, 2630056, 2832368, 2928926, 3347344, 3391388, 4602598, 4956644, 5260112, 5857852, 6782776, 9205196, 9913288, 11715704, 13565552, 16109093, 18410392, 19826576, 23431408, 32218186, 36820784, 64436372, 128872744, 257745488]

約数ペア:

[(1, 257745488), (2, 128872744), (4, 64436372), (7, 36820784), (8, 32218186), (11, 23431408), (13, 19826576), (14, 18410392), (16, 16109093), (19, 13565552), (22, 11715704), (26, 9913288), (28, 9205196), (38, 6782776), (44, 5857852), (49, 5260112), (52, 4956644), (56, 4602598), (76, 3391388), (77, 3347344), (88, 2928926), (91, 2832368), (98, 2630056), (104, 2478322), (112, 2301299), (121, 2130128), (133, 1937936), (143, 1802416), (152, 1695694), (154, 1673672), (176, 1464463), (182, 1416184), (196, 1315028), (208, 1239161), (209, 1233232), (242, 1065064), (247, 1043504), (266, 968968), (286, 901208), (304, 847847), (308, 836836), (364, 708092), (392, 657514), (418, 616616), (484, 532532), (494, 521752), (532, 484484), (539, 478192), (572, 450604), (616, 418418), (637, 404624), (728, 354046), (784, 328757), (836, 308308), (847, 304304), (931, 276848), (968, 266266), (988, 260876), (1001, 257488), (1064, 242242), (1078, 239096), (1144, 225302), (1232, 209209), (1274, 202312), (1331, 193648), (1456, 177023), (1463, 176176), (1573, 163856), (1672, 154154), (1694, 152152), (1729, 149072), (1862, 138424), (1936, 133133), (1976, 130438), (2002, 128744), (2128, 121121), (2156, 119548), (2288, 112651), (2299, 112112), (2548, 101156), (2662, 96824), (2717, 94864), (2926, 88088), (3146, 81928), (3344, 77077), (3388, 76076), (3458, 74536), (3724, 69212), (3952, 65219), (4004, 64372), (4312, 59774), (4598, 56056), (5096, 50578), (5324, 48412), (5434, 47432), (5852, 44044), (5929, 43472), (6292, 40964), (6776, 38038), (6916, 37268), (7007, 36784), (7448, 34606), (8008, 32186), (8624, 29887), (9196, 28028), (9317, 27664), (10192, 25289), (10241, 25168), (10648, 24206), (10868, 23716), (11011, 23408), (11704, 22022), (11858, 21736), (12103, 21296), (12584, 20482), (13552, 19019), (13832, 18634), (14014, 18392), (14896, 17303), (16016, 16093)]