20790504

素因数分解:

$2^3\times 3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:180

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 46433016

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 49, 56, 63, 71, 72, 83, 84, 98, 126, 142, 147, 166, 168, 196, 213, 249, 252, 284, 294, 332, 392, 426, 441, 497, 498, 504, 568, 581, 588, 639, 664, 747, 852, 882, 994, 996, 1162, 1176, 1278, 1491, 1494, 1704, 1743, 1764, 1988, 1992, 2324, 2556, 2982, 2988, 3479, 3486, 3528, 3976, 4067, 4473, 4648, 5112, 5229, 5893, 5964, 5976, 6958, 6972, 8134, 8946, 10437, 10458, 11786, 11928, 12201, 13916, 13944, 16268, 17679, 17892, 20874, 20916, 23572, 24402, 27832, 31311, 32536, 35358, 35784, 36603, 41251, 41748, 41832, 47144, 48804, 53037, 62622, 70716, 73206, 82502, 83496, 97608, 106074, 123753, 125244, 141432, 146412, 165004, 212148, 247506, 250488, 288757, 292824, 330008, 371259, 424296, 495012, 577514, 742518, 866271, 990024, 1155028, 1485036, 1732542, 2310056, 2598813, 2970072, 3465084, 5197626, 6930168, 10395252, 20790504]

約数ペア:

[(1, 20790504), (2, 10395252), (3, 6930168), (4, 5197626), (6, 3465084), (7, 2970072), (8, 2598813), (9, 2310056), (12, 1732542), (14, 1485036), (18, 1155028), (21, 990024), (24, 866271), (28, 742518), (36, 577514), (42, 495012), (49, 424296), (56, 371259), (63, 330008), (71, 292824), (72, 288757), (83, 250488), (84, 247506), (98, 212148), (126, 165004), (142, 146412), (147, 141432), (166, 125244), (168, 123753), (196, 106074), (213, 97608), (249, 83496), (252, 82502), (284, 73206), (294, 70716), (332, 62622), (392, 53037), (426, 48804), (441, 47144), (497, 41832), (498, 41748), (504, 41251), (568, 36603), (581, 35784), (588, 35358), (639, 32536), (664, 31311), (747, 27832), (852, 24402), (882, 23572), (994, 20916), (996, 20874), (1162, 17892), (1176, 17679), (1278, 16268), (1491, 13944), (1494, 13916), (1704, 12201), (1743, 11928), (1764, 11786), (1988, 10458), (1992, 10437), (2324, 8946), (2556, 8134), (2982, 6972), (2988, 6958), (3479, 5976), (3486, 5964), (3528, 5893), (3976, 5229), (4067, 5112), (4473, 4648)]