128776960

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:214

約数の個数: 144

約数和(自身を含む): 339958080

約数和(自身を除く): 211181120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 71, 80, 104, 109, 128, 130, 142, 160, 208, 218, 256, 260, 284, 320, 355, 416, 436, 520, 545, 568, 640, 710, 832, 872, 923, 1040, 1090, 1136, 1280, 1417, 1420, 1664, 1744, 1846, 2080, 2180, 2272, 2834, 2840, 3328, 3488, 3692, 4160, 4360, 4544, 4615, 5668, 5680, 6976, 7085, 7384, 7739, 8320, 8720, 9088, 9230, 11336, 11360, 13952, 14170, 14768, 15478, 16640, 17440, 18176, 18460, 22672, 22720, 27904, 28340, 29536, 30956, 34880, 36920, 38695, 45344, 45440, 56680, 59072, 61912, 69760, 73840, 77390, 90688, 90880, 100607, 113360, 118144, 123824, 139520, 147680, 154780, 181376, 201214, 226720, 236288, 247648, 295360, 309560, 362752, 402428, 453440, 495296, 503035, 590720, 619120, 804856, 906880, 990592, 1006070, 1181440, 1238240, 1609712, 1813760, 1981184, 2012140, 2476480, 3219424, 4024280, 4952960, 6438848, 8048560, 9905920, 12877696, 16097120, 25755392, 32194240, 64388480, 128776960]

約数ペア:

[(1, 128776960), (2, 64388480), (4, 32194240), (5, 25755392), (8, 16097120), (10, 12877696), (13, 9905920), (16, 8048560), (20, 6438848), (26, 4952960), (32, 4024280), (40, 3219424), (52, 2476480), (64, 2012140), (65, 1981184), (71, 1813760), (80, 1609712), (104, 1238240), (109, 1181440), (128, 1006070), (130, 990592), (142, 906880), (160, 804856), (208, 619120), (218, 590720), (256, 503035), (260, 495296), (284, 453440), (320, 402428), (355, 362752), (416, 309560), (436, 295360), (520, 247648), (545, 236288), (568, 226720), (640, 201214), (710, 181376), (832, 154780), (872, 147680), (923, 139520), (1040, 123824), (1090, 118144), (1136, 113360), (1280, 100607), (1417, 90880), (1420, 90688), (1664, 77390), (1744, 73840), (1846, 69760), (2080, 61912), (2180, 59072), (2272, 56680), (2834, 45440), (2840, 45344), (3328, 38695), (3488, 36920), (3692, 34880), (4160, 30956), (4360, 29536), (4544, 28340), (4615, 27904), (5668, 22720), (5680, 22672), (6976, 18460), (7085, 18176), (7384, 17440), (7739, 16640), (8320, 15478), (8720, 14768), (9088, 14170), (9230, 13952), (11336, 11360)]