77991680

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:186

約数の個数: 144

約数和(自身を含む): 207752160

約数和(自身を除く): 129760480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 43, 52, 64, 65, 80, 86, 104, 109, 128, 130, 160, 172, 208, 215, 218, 256, 260, 320, 344, 416, 430, 436, 520, 545, 559, 640, 688, 832, 860, 872, 1040, 1090, 1118, 1280, 1376, 1417, 1664, 1720, 1744, 2080, 2180, 2236, 2752, 2795, 2834, 3328, 3440, 3488, 4160, 4360, 4472, 4687, 5504, 5590, 5668, 6880, 6976, 7085, 8320, 8720, 8944, 9374, 11008, 11180, 11336, 13760, 13952, 14170, 16640, 17440, 17888, 18748, 22360, 22672, 23435, 27520, 27904, 28340, 34880, 35776, 37496, 44720, 45344, 46870, 55040, 56680, 60931, 69760, 71552, 74992, 89440, 90688, 93740, 113360, 121862, 139520, 143104, 149984, 178880, 181376, 187480, 226720, 243724, 299968, 304655, 357760, 362752, 374960, 453440, 487448, 599936, 609310, 715520, 749920, 906880, 974896, 1199872, 1218620, 1499840, 1813760, 1949792, 2437240, 2999680, 3899584, 4874480, 5999360, 7799168, 9748960, 15598336, 19497920, 38995840, 77991680]

約数ペア:

[(1, 77991680), (2, 38995840), (4, 19497920), (5, 15598336), (8, 9748960), (10, 7799168), (13, 5999360), (16, 4874480), (20, 3899584), (26, 2999680), (32, 2437240), (40, 1949792), (43, 1813760), (52, 1499840), (64, 1218620), (65, 1199872), (80, 974896), (86, 906880), (104, 749920), (109, 715520), (128, 609310), (130, 599936), (160, 487448), (172, 453440), (208, 374960), (215, 362752), (218, 357760), (256, 304655), (260, 299968), (320, 243724), (344, 226720), (416, 187480), (430, 181376), (436, 178880), (520, 149984), (545, 143104), (559, 139520), (640, 121862), (688, 113360), (832, 93740), (860, 90688), (872, 89440), (1040, 74992), (1090, 71552), (1118, 69760), (1280, 60931), (1376, 56680), (1417, 55040), (1664, 46870), (1720, 45344), (1744, 44720), (2080, 37496), (2180, 35776), (2236, 34880), (2752, 28340), (2795, 27904), (2834, 27520), (3328, 23435), (3440, 22672), (3488, 22360), (4160, 18748), (4360, 17888), (4472, 17440), (4687, 16640), (5504, 14170), (5590, 13952), (5668, 13760), (6880, 11336), (6976, 11180), (7085, 11008), (8320, 9374), (8720, 8944)]