81121920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1$

素因数の和:223

約数の個数: 256

約数和(自身を含む): 296110080

約数和(自身を除く): 214988160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 23, 24, 30, 32, 33, 40, 44, 46, 48, 55, 60, 64, 66, 69, 80, 88, 92, 96, 110, 115, 120, 128, 132, 138, 160, 165, 167, 176, 184, 192, 220, 230, 240, 253, 264, 276, 320, 330, 334, 345, 352, 368, 384, 440, 460, 480, 501, 506, 528, 552, 640, 660, 668, 690, 704, 736, 759, 835, 880, 920, 960, 1002, 1012, 1056, 1104, 1265, 1320, 1336, 1380, 1408, 1472, 1518, 1670, 1760, 1837, 1840, 1920, 2004, 2024, 2112, 2208, 2505, 2530, 2640, 2672, 2760, 2944, 3036, 3340, 3520, 3674, 3680, 3795, 3841, 4008, 4048, 4224, 4416, 5010, 5060, 5280, 5344, 5511, 5520, 6072, 6680, 7040, 7348, 7360, 7590, 7682, 8016, 8096, 8832, 9185, 10020, 10120, 10560, 10688, 11022, 11040, 11523, 12144, 13360, 14696, 14720, 15180, 15364, 16032, 16192, 18370, 19205, 20040, 20240, 21120, 21376, 22044, 22080, 23046, 24288, 26720, 27555, 29392, 30360, 30728, 32064, 32384, 36740, 38410, 40080, 40480, 42251, 44088, 44160, 46092, 48576, 53440, 55110, 57615, 58784, 60720, 61456, 64128, 73480, 76820, 80160, 80960, 84502, 88176, 92184, 97152, 106880, 110220, 115230, 117568, 121440, 122912, 126753, 146960, 153640, 160320, 161920, 169004, 176352, 184368, 211255, 220440, 230460, 235136, 242880, 245824, 253506, 293920, 307280, 320640, 338008, 352704, 368736, 422510, 440880, 460920, 485760, 491648, 507012, 587840, 614560, 633765, 676016, 705408, 737472, 845020, 881760, 921840, 1014024, 1175680, 1229120, 1267530, 1352032, 1474944, 1690040, 1763520, 1843680, 2028048, 2458240, 2535060, 2704064, 3380080, 3527040, 3687360, 4056096, 5070120, 5408128, 6760160, 7374720, 8112192, 10140240, 13520320, 16224384, 20280480, 27040640, 40560960, 81121920]

約数ペア:

[(1, 81121920), (2, 40560960), (3, 27040640), (4, 20280480), (5, 16224384), (6, 13520320), (8, 10140240), (10, 8112192), (11, 7374720), (12, 6760160), (15, 5408128), (16, 5070120), (20, 4056096), (22, 3687360), (23, 3527040), (24, 3380080), (30, 2704064), (32, 2535060), (33, 2458240), (40, 2028048), (44, 1843680), (46, 1763520), (48, 1690040), (55, 1474944), (60, 1352032), (64, 1267530), (66, 1229120), (69, 1175680), (80, 1014024), (88, 921840), (92, 881760), (96, 845020), (110, 737472), (115, 705408), (120, 676016), (128, 633765), (132, 614560), (138, 587840), (160, 507012), (165, 491648), (167, 485760), (176, 460920), (184, 440880), (192, 422510), (220, 368736), (230, 352704), (240, 338008), (253, 320640), (264, 307280), (276, 293920), (320, 253506), (330, 245824), (334, 242880), (345, 235136), (352, 230460), (368, 220440), (384, 211255), (440, 184368), (460, 176352), (480, 169004), (501, 161920), (506, 160320), (528, 153640), (552, 146960), (640, 126753), (660, 122912), (668, 121440), (690, 117568), (704, 115230), (736, 110220), (759, 106880), (835, 97152), (880, 92184), (920, 88176), (960, 84502), (1002, 80960), (1012, 80160), (1056, 76820), (1104, 73480), (1265, 64128), (1320, 61456), (1336, 60720), (1380, 58784), (1408, 57615), (1472, 55110), (1518, 53440), (1670, 48576), (1760, 46092), (1837, 44160), (1840, 44088), (1920, 42251), (2004, 40480), (2024, 40080), (2112, 38410), (2208, 36740), (2505, 32384), (2530, 32064), (2640, 30728), (2672, 30360), (2760, 29392), (2944, 27555), (3036, 26720), (3340, 24288), (3520, 23046), (3674, 22080), (3680, 22044), (3795, 21376), (3841, 21120), (4008, 20240), (4048, 20040), (4224, 19205), (4416, 18370), (5010, 16192), (5060, 16032), (5280, 15364), (5344, 15180), (5511, 14720), (5520, 14696), (6072, 13360), (6680, 12144), (7040, 11523), (7348, 11040), (7360, 11022), (7590, 10688), (7682, 10560), (8016, 10120), (8096, 10020), (8832, 9185)]