1640325720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{829}}^1\times {\mathrm{1499}}^1$

素因数の和:2353

約数の個数: 128

約数和(自身を含む): 5378400000

約数和(自身を除く): 3738074280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 829, 1320, 1499, 1658, 2487, 2998, 3316, 4145, 4497, 4974, 5996, 6632, 7495, 8290, 8994, 9119, 9948, 11992, 12435, 14990, 16489, 16580, 17988, 18238, 19896, 22485, 24870, 27357, 29980, 32978, 33160, 35976, 36476, 44970, 45595, 49467, 49740, 54714, 59960, 65956, 72952, 82445, 89940, 91190, 98934, 99480, 109428, 131912, 136785, 164890, 179880, 182380, 197868, 218856, 247335, 273570, 329780, 364760, 395736, 494670, 547140, 659560, 989340, 1094280, 1242671, 1978680, 2485342, 3728013, 4970684, 6213355, 7456026, 9941368, 12426710, 13669381, 14912052, 18640065, 24853420, 27338762, 29824104, 37280130, 41008143, 49706840, 54677524, 68346905, 74560260, 82016286, 109355048, 136693810, 149120520, 164032572, 205040715, 273387620, 328065144, 410081430, 546775240, 820162860, 1640325720]

約数ペア:

[(1, 1640325720), (2, 820162860), (3, 546775240), (4, 410081430), (5, 328065144), (6, 273387620), (8, 205040715), (10, 164032572), (11, 149120520), (12, 136693810), (15, 109355048), (20, 82016286), (22, 74560260), (24, 68346905), (30, 54677524), (33, 49706840), (40, 41008143), (44, 37280130), (55, 29824104), (60, 27338762), (66, 24853420), (88, 18640065), (110, 14912052), (120, 13669381), (132, 12426710), (165, 9941368), (220, 7456026), (264, 6213355), (330, 4970684), (440, 3728013), (660, 2485342), (829, 1978680), (1320, 1242671), (1499, 1094280), (1658, 989340), (2487, 659560), (2998, 547140), (3316, 494670), (4145, 395736), (4497, 364760), (4974, 329780), (5996, 273570), (6632, 247335), (7495, 218856), (8290, 197868), (8994, 182380), (9119, 179880), (9948, 164890), (11992, 136785), (12435, 131912), (14990, 109428), (16489, 99480), (16580, 98934), (17988, 91190), (18238, 89940), (19896, 82445), (22485, 72952), (24870, 65956), (27357, 59960), (29980, 54714), (32978, 49740), (33160, 49467), (35976, 45595), (36476, 44970)]