80321280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1609}}^1$

素因数の和:1646

約数の個数: 144

約数和(自身を含む): 276430560

約数和(自身を除く): 196109280

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, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 768, 780, 832, 960, 1040, 1248, 1280, 1560, 1609, 1664, 1920, 2080, 2496, 3120, 3218, 3328, 3840, 4160, 4827, 4992, 6240, 6436, 8045, 8320, 9654, 9984, 12480, 12872, 16090, 16640, 19308, 20917, 24135, 24960, 25744, 32180, 38616, 41834, 48270, 49920, 51488, 62751, 64360, 77232, 83668, 96540, 102976, 104585, 125502, 128720, 154464, 167336, 193080, 205952, 209170, 251004, 257440, 308928, 313755, 334672, 386160, 411904, 418340, 502008, 514880, 617856, 627510, 669344, 772320, 836680, 1004016, 1029760, 1235712, 1255020, 1338688, 1544640, 1673360, 2008032, 2059520, 2510040, 2677376, 3089280, 3346720, 4016064, 5020080, 5354752, 6178560, 6693440, 8032128, 10040160, 13386880, 16064256, 20080320, 26773760, 40160640, 80321280]

約数ペア:

[(1, 80321280), (2, 40160640), (3, 26773760), (4, 20080320), (5, 16064256), (6, 13386880), (8, 10040160), (10, 8032128), (12, 6693440), (13, 6178560), (15, 5354752), (16, 5020080), (20, 4016064), (24, 3346720), (26, 3089280), (30, 2677376), (32, 2510040), (39, 2059520), (40, 2008032), (48, 1673360), (52, 1544640), (60, 1338688), (64, 1255020), (65, 1235712), (78, 1029760), (80, 1004016), (96, 836680), (104, 772320), (120, 669344), (128, 627510), (130, 617856), (156, 514880), (160, 502008), (192, 418340), (195, 411904), (208, 386160), (240, 334672), (256, 313755), (260, 308928), (312, 257440), (320, 251004), (384, 209170), (390, 205952), (416, 193080), (480, 167336), (520, 154464), (624, 128720), (640, 125502), (768, 104585), (780, 102976), (832, 96540), (960, 83668), (1040, 77232), (1248, 64360), (1280, 62751), (1560, 51488), (1609, 49920), (1664, 48270), (1920, 41834), (2080, 38616), (2496, 32180), (3120, 25744), (3218, 24960), (3328, 24135), (3840, 20917), (4160, 19308), (4827, 16640), (4992, 16090), (6240, 12872), (6436, 12480), (8045, 9984), (8320, 9654)]