28271320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:233

約数の個数: 128

約数和(自身を含む): 81077760

約数和(自身を除く): 52806440

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 67, 70, 77, 88, 110, 134, 137, 140, 154, 220, 268, 274, 280, 308, 335, 385, 440, 469, 536, 548, 616, 670, 685, 737, 770, 938, 959, 1096, 1340, 1370, 1474, 1507, 1540, 1876, 1918, 2345, 2680, 2740, 2948, 3014, 3080, 3685, 3752, 3836, 4690, 4795, 5159, 5480, 5896, 6028, 7370, 7535, 7672, 9179, 9380, 9590, 10318, 10549, 12056, 14740, 15070, 18358, 18760, 19180, 20636, 21098, 25795, 29480, 30140, 36716, 38360, 41272, 42196, 45895, 51590, 52745, 60280, 64253, 73432, 84392, 91790, 100969, 103180, 105490, 128506, 183580, 201938, 206360, 210980, 257012, 321265, 367160, 403876, 421960, 504845, 514024, 642530, 706783, 807752, 1009690, 1285060, 1413566, 2019380, 2570120, 2827132, 3533915, 4038760, 5654264, 7067830, 14135660, 28271320]

約数ペア:

[(1, 28271320), (2, 14135660), (4, 7067830), (5, 5654264), (7, 4038760), (8, 3533915), (10, 2827132), (11, 2570120), (14, 2019380), (20, 1413566), (22, 1285060), (28, 1009690), (35, 807752), (40, 706783), (44, 642530), (55, 514024), (56, 504845), (67, 421960), (70, 403876), (77, 367160), (88, 321265), (110, 257012), (134, 210980), (137, 206360), (140, 201938), (154, 183580), (220, 128506), (268, 105490), (274, 103180), (280, 100969), (308, 91790), (335, 84392), (385, 73432), (440, 64253), (469, 60280), (536, 52745), (548, 51590), (616, 45895), (670, 42196), (685, 41272), (737, 38360), (770, 36716), (938, 30140), (959, 29480), (1096, 25795), (1340, 21098), (1370, 20636), (1474, 19180), (1507, 18760), (1540, 18358), (1876, 15070), (1918, 14740), (2345, 12056), (2680, 10549), (2740, 10318), (2948, 9590), (3014, 9380), (3080, 9179), (3685, 7672), (3752, 7535), (3836, 7370), (4690, 6028), (4795, 5896), (5159, 5480)]