21009120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:225

約数の個数: 192

約数和(自身を含む): 75769344

約数和(自身を除く): 54760224

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, 66, 69, 80, 88, 92, 96, 110, 115, 120, 132, 138, 160, 165, 173, 176, 184, 220, 230, 240, 253, 264, 276, 330, 345, 346, 352, 368, 440, 460, 480, 506, 519, 528, 552, 660, 690, 692, 736, 759, 865, 880, 920, 1012, 1038, 1056, 1104, 1265, 1320, 1380, 1384, 1518, 1730, 1760, 1840, 1903, 2024, 2076, 2208, 2530, 2595, 2640, 2760, 2768, 3036, 3460, 3680, 3795, 3806, 3979, 4048, 4152, 5060, 5190, 5280, 5520, 5536, 5709, 6072, 6920, 7590, 7612, 7958, 8096, 8304, 9515, 10120, 10380, 11040, 11418, 11937, 12144, 13840, 15180, 15224, 15916, 16608, 19030, 19895, 20240, 20760, 22836, 23874, 24288, 27680, 28545, 30360, 30448, 31832, 38060, 39790, 40480, 41520, 43769, 45672, 47748, 57090, 59685, 60720, 60896, 63664, 76120, 79580, 83040, 87538, 91344, 95496, 114180, 119370, 121440, 127328, 131307, 152240, 159160, 175076, 182688, 190992, 218845, 228360, 238740, 262614, 304480, 318320, 350152, 381984, 437690, 456720, 477480, 525228, 636640, 656535, 700304, 875380, 913440, 954960, 1050456, 1313070, 1400608, 1750760, 1909920, 2100912, 2626140, 3501520, 4201824, 5252280, 7003040, 10504560, 21009120]

約数ペア:

[(1, 21009120), (2, 10504560), (3, 7003040), (4, 5252280), (5, 4201824), (6, 3501520), (8, 2626140), (10, 2100912), (11, 1909920), (12, 1750760), (15, 1400608), (16, 1313070), (20, 1050456), (22, 954960), (23, 913440), (24, 875380), (30, 700304), (32, 656535), (33, 636640), (40, 525228), (44, 477480), (46, 456720), (48, 437690), (55, 381984), (60, 350152), (66, 318320), (69, 304480), (80, 262614), (88, 238740), (92, 228360), (96, 218845), (110, 190992), (115, 182688), (120, 175076), (132, 159160), (138, 152240), (160, 131307), (165, 127328), (173, 121440), (176, 119370), (184, 114180), (220, 95496), (230, 91344), (240, 87538), (253, 83040), (264, 79580), (276, 76120), (330, 63664), (345, 60896), (346, 60720), (352, 59685), (368, 57090), (440, 47748), (460, 45672), (480, 43769), (506, 41520), (519, 40480), (528, 39790), (552, 38060), (660, 31832), (690, 30448), (692, 30360), (736, 28545), (759, 27680), (865, 24288), (880, 23874), (920, 22836), (1012, 20760), (1038, 20240), (1056, 19895), (1104, 19030), (1265, 16608), (1320, 15916), (1380, 15224), (1384, 15180), (1518, 13840), (1730, 12144), (1760, 11937), (1840, 11418), (1903, 11040), (2024, 10380), (2076, 10120), (2208, 9515), (2530, 8304), (2595, 8096), (2640, 7958), (2760, 7612), (2768, 7590), (3036, 6920), (3460, 6072), (3680, 5709), (3795, 5536), (3806, 5520), (3979, 5280), (4048, 5190), (4152, 5060)]