51309440

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{881}}^1$

素因数の和:920

約数の個数: 128

約数和(自身を含む): 151139520

約数和(自身を除く): 99830080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 640, 728, 832, 881, 896, 910, 1040, 1120, 1456, 1664, 1762, 1820, 2080, 2240, 2912, 3524, 3640, 4160, 4405, 4480, 5824, 6167, 7048, 7280, 8320, 8810, 11453, 11648, 12334, 14096, 14560, 17620, 22906, 24668, 28192, 29120, 30835, 35240, 45812, 49336, 56384, 57265, 58240, 61670, 70480, 80171, 91624, 98672, 112768, 114530, 123340, 140960, 160342, 183248, 197344, 229060, 246680, 281920, 320684, 366496, 394688, 400855, 458120, 493360, 563840, 641368, 732992, 789376, 801710, 916240, 986720, 1282736, 1465984, 1603420, 1832480, 1973440, 2565472, 3206840, 3664960, 3946880, 5130944, 6413680, 7329920, 10261888, 12827360, 25654720, 51309440]

約数ペア:

[(1, 51309440), (2, 25654720), (4, 12827360), (5, 10261888), (7, 7329920), (8, 6413680), (10, 5130944), (13, 3946880), (14, 3664960), (16, 3206840), (20, 2565472), (26, 1973440), (28, 1832480), (32, 1603420), (35, 1465984), (40, 1282736), (52, 986720), (56, 916240), (64, 801710), (65, 789376), (70, 732992), (80, 641368), (91, 563840), (104, 493360), (112, 458120), (128, 400855), (130, 394688), (140, 366496), (160, 320684), (182, 281920), (208, 246680), (224, 229060), (260, 197344), (280, 183248), (320, 160342), (364, 140960), (416, 123340), (448, 114530), (455, 112768), (520, 98672), (560, 91624), (640, 80171), (728, 70480), (832, 61670), (881, 58240), (896, 57265), (910, 56384), (1040, 49336), (1120, 45812), (1456, 35240), (1664, 30835), (1762, 29120), (1820, 28192), (2080, 24668), (2240, 22906), (2912, 17620), (3524, 14560), (3640, 14096), (4160, 12334), (4405, 11648), (4480, 11453), (5824, 8810), (6167, 8320), (7048, 7280)]