28719180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{991}}^1$

素因数の和:1036

約数の個数: 144

約数和(自身を含む): 103993344

約数和(自身を除く): 75274164

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 28, 30, 35, 36, 42, 45, 46, 60, 63, 69, 70, 84, 90, 92, 105, 115, 126, 138, 140, 161, 180, 207, 210, 230, 252, 276, 315, 322, 345, 414, 420, 460, 483, 630, 644, 690, 805, 828, 966, 991, 1035, 1260, 1380, 1449, 1610, 1932, 1982, 2070, 2415, 2898, 2973, 3220, 3964, 4140, 4830, 4955, 5796, 5946, 6937, 7245, 8919, 9660, 9910, 11892, 13874, 14490, 14865, 17838, 19820, 20811, 22793, 27748, 28980, 29730, 34685, 35676, 41622, 44595, 45586, 59460, 62433, 68379, 69370, 83244, 89190, 91172, 104055, 113965, 124866, 136758, 138740, 159551, 178380, 205137, 208110, 227930, 249732, 273516, 312165, 319102, 341895, 410274, 416220, 455860, 478653, 624330, 638204, 683790, 797755, 820548, 957306, 1025685, 1248660, 1367580, 1435959, 1595510, 1914612, 2051370, 2393265, 2871918, 3191020, 4102740, 4786530, 5743836, 7179795, 9573060, 14359590, 28719180]

約数ペア:

[(1, 28719180), (2, 14359590), (3, 9573060), (4, 7179795), (5, 5743836), (6, 4786530), (7, 4102740), (9, 3191020), (10, 2871918), (12, 2393265), (14, 2051370), (15, 1914612), (18, 1595510), (20, 1435959), (21, 1367580), (23, 1248660), (28, 1025685), (30, 957306), (35, 820548), (36, 797755), (42, 683790), (45, 638204), (46, 624330), (60, 478653), (63, 455860), (69, 416220), (70, 410274), (84, 341895), (90, 319102), (92, 312165), (105, 273516), (115, 249732), (126, 227930), (138, 208110), (140, 205137), (161, 178380), (180, 159551), (207, 138740), (210, 136758), (230, 124866), (252, 113965), (276, 104055), (315, 91172), (322, 89190), (345, 83244), (414, 69370), (420, 68379), (460, 62433), (483, 59460), (630, 45586), (644, 44595), (690, 41622), (805, 35676), (828, 34685), (966, 29730), (991, 28980), (1035, 27748), (1260, 22793), (1380, 20811), (1449, 19820), (1610, 17838), (1932, 14865), (1982, 14490), (2070, 13874), (2415, 11892), (2898, 9910), (2973, 9660), (3220, 8919), (3964, 7245), (4140, 6937), (4830, 5946), (4955, 5796)]