21981265920

素因数分解:

$2^{15}\times 3^3\times 5^1\times {\mathrm{4969}}^1$

素因数の和:5013

約数の個数: 256

約数和(自身を含む): 78170148000

約数和(自身を除く): 56188882080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 512, 540, 576, 640, 720, 768, 864, 960, 1024, 1080, 1152, 1280, 1440, 1536, 1728, 1920, 2048, 2160, 2304, 2560, 2880, 3072, 3456, 3840, 4096, 4320, 4608, 4969, 5120, 5760, 6144, 6912, 7680, 8192, 8640, 9216, 9938, 10240, 11520, 12288, 13824, 14907, 15360, 16384, 17280, 18432, 19876, 20480, 23040, 24576, 24845, 27648, 29814, 30720, 32768, 34560, 36864, 39752, 40960, 44721, 46080, 49152, 49690, 55296, 59628, 61440, 69120, 73728, 74535, 79504, 81920, 89442, 92160, 98304, 99380, 110592, 119256, 122880, 134163, 138240, 147456, 149070, 159008, 163840, 178884, 184320, 198760, 221184, 223605, 238512, 245760, 268326, 276480, 294912, 298140, 318016, 357768, 368640, 397520, 442368, 447210, 477024, 491520, 536652, 552960, 596280, 636032, 670815, 715536, 737280, 795040, 884736, 894420, 954048, 1073304, 1105920, 1192560, 1272064, 1341630, 1431072, 1474560, 1590080, 1788840, 1908096, 2146608, 2211840, 2385120, 2544128, 2683260, 2862144, 3180160, 3577680, 3816192, 4293216, 4423680, 4770240, 5088256, 5366520, 5724288, 6360320, 7155360, 7632384, 8586432, 9540480, 10176512, 10733040, 11448576, 12720640, 14310720, 15264768, 17172864, 19080960, 20353024, 21466080, 22897152, 25441280, 28621440, 30529536, 34345728, 38161920, 40706048, 42932160, 45794304, 50882560, 57242880, 61059072, 68691456, 76323840, 81412096, 85864320, 91588608, 101765120, 114485760, 122118144, 137382912, 152647680, 162824192, 171728640, 183177216, 203530240, 228971520, 244236288, 274765824, 305295360, 343457280, 366354432, 407060480, 457943040, 488472576, 549531648, 610590720, 686914560, 732708864, 814120960, 915886080, 1099063296, 1221181440, 1373829120, 1465417728, 1831772160, 2198126592, 2442362880, 2747658240, 3663544320, 4396253184, 5495316480, 7327088640, 10990632960, 21981265920]

約数ペア:

[(1, 21981265920), (2, 10990632960), (3, 7327088640), (4, 5495316480), (5, 4396253184), (6, 3663544320), (8, 2747658240), (9, 2442362880), (10, 2198126592), (12, 1831772160), (15, 1465417728), (16, 1373829120), (18, 1221181440), (20, 1099063296), (24, 915886080), (27, 814120960), (30, 732708864), (32, 686914560), (36, 610590720), (40, 549531648), (45, 488472576), (48, 457943040), (54, 407060480), (60, 366354432), (64, 343457280), (72, 305295360), (80, 274765824), (90, 244236288), (96, 228971520), (108, 203530240), (120, 183177216), (128, 171728640), (135, 162824192), (144, 152647680), (160, 137382912), (180, 122118144), (192, 114485760), (216, 101765120), (240, 91588608), (256, 85864320), (270, 81412096), (288, 76323840), (320, 68691456), (360, 61059072), (384, 57242880), (432, 50882560), (480, 45794304), (512, 42932160), (540, 40706048), (576, 38161920), (640, 34345728), (720, 30529536), (768, 28621440), (864, 25441280), (960, 22897152), (1024, 21466080), (1080, 20353024), (1152, 19080960), (1280, 17172864), (1440, 15264768), (1536, 14310720), (1728, 12720640), (1920, 11448576), (2048, 10733040), (2160, 10176512), (2304, 9540480), (2560, 8586432), (2880, 7632384), (3072, 7155360), (3456, 6360320), (3840, 5724288), (4096, 5366520), (4320, 5088256), (4608, 4770240), (4969, 4423680), (5120, 4293216), (5760, 3816192), (6144, 3577680), (6912, 3180160), (7680, 2862144), (8192, 2683260), (8640, 2544128), (9216, 2385120), (9938, 2211840), (10240, 2146608), (11520, 1908096), (12288, 1788840), (13824, 1590080), (14907, 1474560), (15360, 1431072), (16384, 1341630), (17280, 1272064), (18432, 1192560), (19876, 1105920), (20480, 1073304), (23040, 954048), (24576, 894420), (24845, 884736), (27648, 795040), (29814, 737280), (30720, 715536), (32768, 670815), (34560, 636032), (36864, 596280), (39752, 552960), (40960, 536652), (44721, 491520), (46080, 477024), (49152, 447210), (49690, 442368), (55296, 397520), (59628, 368640), (61440, 357768), (69120, 318016), (73728, 298140), (74535, 294912), (79504, 276480), (81920, 268326), (89442, 245760), (92160, 238512), (98304, 223605), (99380, 221184), (110592, 198760), (119256, 184320), (122880, 178884), (134163, 163840), (138240, 159008), (147456, 149070)]