2720640

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:144

約数の個数: 128

約数和(自身を含む): 9424800

約数和(自身を除く): 6704160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 109, 120, 128, 130, 156, 160, 192, 195, 208, 218, 240, 260, 312, 320, 327, 384, 390, 416, 436, 480, 520, 545, 624, 640, 654, 780, 832, 872, 960, 1040, 1090, 1248, 1308, 1417, 1560, 1635, 1664, 1744, 1920, 2080, 2180, 2496, 2616, 2834, 3120, 3270, 3488, 4160, 4251, 4360, 4992, 5232, 5668, 6240, 6540, 6976, 7085, 8320, 8502, 8720, 10464, 11336, 12480, 13080, 13952, 14170, 17004, 17440, 20928, 21255, 22672, 24960, 26160, 28340, 34008, 34880, 41856, 42510, 45344, 52320, 56680, 68016, 69760, 85020, 90688, 104640, 113360, 136032, 170040, 181376, 209280, 226720, 272064, 340080, 453440, 544128, 680160, 906880, 1360320, 2720640]

約数ペア:

[(1, 2720640), (2, 1360320), (3, 906880), (4, 680160), (5, 544128), (6, 453440), (8, 340080), (10, 272064), (12, 226720), (13, 209280), (15, 181376), (16, 170040), (20, 136032), (24, 113360), (26, 104640), (30, 90688), (32, 85020), (39, 69760), (40, 68016), (48, 56680), (52, 52320), (60, 45344), (64, 42510), (65, 41856), (78, 34880), (80, 34008), (96, 28340), (104, 26160), (109, 24960), (120, 22672), (128, 21255), (130, 20928), (156, 17440), (160, 17004), (192, 14170), (195, 13952), (208, 13080), (218, 12480), (240, 11336), (260, 10464), (312, 8720), (320, 8502), (327, 8320), (384, 7085), (390, 6976), (416, 6540), (436, 6240), (480, 5668), (520, 5232), (545, 4992), (624, 4360), (640, 4251), (654, 4160), (780, 3488), (832, 3270), (872, 3120), (960, 2834), (1040, 2616), (1090, 2496), (1248, 2180), (1308, 2080), (1417, 1920), (1560, 1744), (1635, 1664)]