20528640

素因数分解:

$2^9\times 3^6\times 5^1\times {\mathrm{11}}^1$

素因数の和:52

約数の個数: 280

約数和(自身を含む): 80506008

約数和(自身を除く): 59977368

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 64, 66, 72, 80, 81, 88, 90, 96, 99, 108, 110, 120, 128, 132, 135, 144, 160, 162, 165, 176, 180, 192, 198, 216, 220, 240, 243, 256, 264, 270, 288, 297, 320, 324, 330, 352, 360, 384, 396, 405, 432, 440, 480, 486, 495, 512, 528, 540, 576, 594, 640, 648, 660, 704, 720, 729, 768, 792, 810, 864, 880, 891, 960, 972, 990, 1056, 1080, 1152, 1188, 1215, 1280, 1296, 1320, 1408, 1440, 1458, 1485, 1536, 1584, 1620, 1728, 1760, 1782, 1920, 1944, 1980, 2112, 2160, 2304, 2376, 2430, 2560, 2592, 2640, 2673, 2816, 2880, 2916, 2970, 3168, 3240, 3456, 3520, 3564, 3645, 3840, 3888, 3960, 4224, 4320, 4455, 4608, 4752, 4860, 5184, 5280, 5346, 5632, 5760, 5832, 5940, 6336, 6480, 6912, 7040, 7128, 7290, 7680, 7776, 7920, 8019, 8448, 8640, 8910, 9504, 9720, 10368, 10560, 10692, 11520, 11664, 11880, 12672, 12960, 13365, 13824, 14080, 14256, 14580, 15552, 15840, 16038, 16896, 17280, 17820, 19008, 19440, 20736, 21120, 21384, 23040, 23328, 23760, 25344, 25920, 26730, 28160, 28512, 29160, 31104, 31680, 32076, 34560, 35640, 38016, 38880, 40095, 41472, 42240, 42768, 46656, 47520, 50688, 51840, 53460, 57024, 58320, 62208, 63360, 64152, 69120, 71280, 76032, 77760, 80190, 84480, 85536, 93312, 95040, 103680, 106920, 114048, 116640, 124416, 126720, 128304, 142560, 152064, 155520, 160380, 171072, 186624, 190080, 207360, 213840, 228096, 233280, 253440, 256608, 285120, 311040, 320760, 342144, 373248, 380160, 427680, 456192, 466560, 513216, 570240, 622080, 641520, 684288, 760320, 855360, 933120, 1026432, 1140480, 1283040, 1368576, 1710720, 1866240, 2052864, 2280960, 2566080, 3421440, 4105728, 5132160, 6842880, 10264320, 20528640]

約数ペア:

[(1, 20528640), (2, 10264320), (3, 6842880), (4, 5132160), (5, 4105728), (6, 3421440), (8, 2566080), (9, 2280960), (10, 2052864), (11, 1866240), (12, 1710720), (15, 1368576), (16, 1283040), (18, 1140480), (20, 1026432), (22, 933120), (24, 855360), (27, 760320), (30, 684288), (32, 641520), (33, 622080), (36, 570240), (40, 513216), (44, 466560), (45, 456192), (48, 427680), (54, 380160), (55, 373248), (60, 342144), (64, 320760), (66, 311040), (72, 285120), (80, 256608), (81, 253440), (88, 233280), (90, 228096), (96, 213840), (99, 207360), (108, 190080), (110, 186624), (120, 171072), (128, 160380), (132, 155520), (135, 152064), (144, 142560), (160, 128304), (162, 126720), (165, 124416), (176, 116640), (180, 114048), (192, 106920), (198, 103680), (216, 95040), (220, 93312), (240, 85536), (243, 84480), (256, 80190), (264, 77760), (270, 76032), (288, 71280), (297, 69120), (320, 64152), (324, 63360), (330, 62208), (352, 58320), (360, 57024), (384, 53460), (396, 51840), (405, 50688), (432, 47520), (440, 46656), (480, 42768), (486, 42240), (495, 41472), (512, 40095), (528, 38880), (540, 38016), (576, 35640), (594, 34560), (640, 32076), (648, 31680), (660, 31104), (704, 29160), (720, 28512), (729, 28160), (768, 26730), (792, 25920), (810, 25344), (864, 23760), (880, 23328), (891, 23040), (960, 21384), (972, 21120), (990, 20736), (1056, 19440), (1080, 19008), (1152, 17820), (1188, 17280), (1215, 16896), (1280, 16038), (1296, 15840), (1320, 15552), (1408, 14580), (1440, 14256), (1458, 14080), (1485, 13824), (1536, 13365), (1584, 12960), (1620, 12672), (1728, 11880), (1760, 11664), (1782, 11520), (1920, 10692), (1944, 10560), (1980, 10368), (2112, 9720), (2160, 9504), (2304, 8910), (2376, 8640), (2430, 8448), (2560, 8019), (2592, 7920), (2640, 7776), (2673, 7680), (2816, 7290), (2880, 7128), (2916, 7040), (2970, 6912), (3168, 6480), (3240, 6336), (3456, 5940), (3520, 5832), (3564, 5760), (3645, 5632), (3840, 5346), (3888, 5280), (3960, 5184), (4224, 4860), (4320, 4752), (4455, 4608)]