19497920

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:182

約数の個数: 112

約数和(自身を含む): 51633120

約数和(自身を除く): 32135200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 43, 52, 64, 65, 80, 86, 104, 109, 130, 160, 172, 208, 215, 218, 260, 320, 344, 416, 430, 436, 520, 545, 559, 688, 832, 860, 872, 1040, 1090, 1118, 1376, 1417, 1720, 1744, 2080, 2180, 2236, 2752, 2795, 2834, 3440, 3488, 4160, 4360, 4472, 4687, 5590, 5668, 6880, 6976, 7085, 8720, 8944, 9374, 11180, 11336, 13760, 14170, 17440, 17888, 18748, 22360, 22672, 23435, 28340, 34880, 35776, 37496, 44720, 45344, 46870, 56680, 60931, 74992, 89440, 90688, 93740, 113360, 121862, 149984, 178880, 187480, 226720, 243724, 299968, 304655, 374960, 453440, 487448, 609310, 749920, 974896, 1218620, 1499840, 1949792, 2437240, 3899584, 4874480, 9748960, 19497920]

約数ペア:

[(1, 19497920), (2, 9748960), (4, 4874480), (5, 3899584), (8, 2437240), (10, 1949792), (13, 1499840), (16, 1218620), (20, 974896), (26, 749920), (32, 609310), (40, 487448), (43, 453440), (52, 374960), (64, 304655), (65, 299968), (80, 243724), (86, 226720), (104, 187480), (109, 178880), (130, 149984), (160, 121862), (172, 113360), (208, 93740), (215, 90688), (218, 89440), (260, 74992), (320, 60931), (344, 56680), (416, 46870), (430, 45344), (436, 44720), (520, 37496), (545, 35776), (559, 34880), (688, 28340), (832, 23435), (860, 22672), (872, 22360), (1040, 18748), (1090, 17888), (1118, 17440), (1376, 14170), (1417, 13760), (1720, 11336), (1744, 11180), (2080, 9374), (2180, 8944), (2236, 8720), (2752, 7085), (2795, 6976), (2834, 6880), (3440, 5668), (3488, 5590), (4160, 4687), (4360, 4472)]