19986405120

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157721}}^1$

素因数の和:157759

約数の個数: 216

約数和(自身を含む): 75437801712

約数和(自身を除く): 55451396592

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 128, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 256, 264, 288, 320, 330, 352, 360, 384, 396, 440, 480, 495, 528, 576, 640, 660, 704, 720, 768, 792, 880, 960, 990, 1056, 1152, 1280, 1320, 1408, 1440, 1584, 1760, 1920, 1980, 2112, 2304, 2640, 2816, 2880, 3168, 3520, 3840, 3960, 4224, 5280, 5760, 6336, 7040, 7920, 8448, 10560, 11520, 12672, 14080, 15840, 21120, 25344, 31680, 42240, 63360, 126720, 157721, 315442, 473163, 630884, 788605, 946326, 1261768, 1419489, 1577210, 1734931, 1892652, 2365815, 2523536, 2838978, 3154420, 3469862, 3785304, 4731630, 5047072, 5204793, 5677956, 6308840, 6939724, 7097445, 7570608, 8674655, 9463260, 10094144, 10409586, 11355912, 12617680, 13879448, 14194890, 15141216, 15614379, 17349310, 18926520, 20188288, 20819172, 22711824, 25235360, 26023965, 27758896, 28389780, 30282432, 31228758, 34698620, 37853040, 40376576, 41638344, 45423648, 50470720, 52047930, 55517792, 56779560, 60564864, 62457516, 69397240, 75706080, 78071895, 83276688, 90847296, 100941440, 104095860, 111035584, 113559120, 121129728, 124915032, 138794480, 151412160, 156143790, 166553376, 181694592, 201882880, 208191720, 222071168, 227118240, 249830064, 277588960, 302824320, 312287580, 333106752, 363389184, 416383440, 444142336, 454236480, 499660128, 555177920, 605648640, 624575160, 666213504, 832766880, 908472960, 999320256, 1110355840, 1249150320, 1332427008, 1665533760, 1816945920, 1998640512, 2220711680, 2498300640, 3331067520, 3997281024, 4996601280, 6662135040, 9993202560, 19986405120]

約数ペア:

[(1, 19986405120), (2, 9993202560), (3, 6662135040), (4, 4996601280), (5, 3997281024), (6, 3331067520), (8, 2498300640), (9, 2220711680), (10, 1998640512), (11, 1816945920), (12, 1665533760), (15, 1332427008), (16, 1249150320), (18, 1110355840), (20, 999320256), (22, 908472960), (24, 832766880), (30, 666213504), (32, 624575160), (33, 605648640), (36, 555177920), (40, 499660128), (44, 454236480), (45, 444142336), (48, 416383440), (55, 363389184), (60, 333106752), (64, 312287580), (66, 302824320), (72, 277588960), (80, 249830064), (88, 227118240), (90, 222071168), (96, 208191720), (99, 201882880), (110, 181694592), (120, 166553376), (128, 156143790), (132, 151412160), (144, 138794480), (160, 124915032), (165, 121129728), (176, 113559120), (180, 111035584), (192, 104095860), (198, 100941440), (220, 90847296), (240, 83276688), (256, 78071895), (264, 75706080), (288, 69397240), (320, 62457516), (330, 60564864), (352, 56779560), (360, 55517792), (384, 52047930), (396, 50470720), (440, 45423648), (480, 41638344), (495, 40376576), (528, 37853040), (576, 34698620), (640, 31228758), (660, 30282432), (704, 28389780), (720, 27758896), (768, 26023965), (792, 25235360), (880, 22711824), (960, 20819172), (990, 20188288), (1056, 18926520), (1152, 17349310), (1280, 15614379), (1320, 15141216), (1408, 14194890), (1440, 13879448), (1584, 12617680), (1760, 11355912), (1920, 10409586), (1980, 10094144), (2112, 9463260), (2304, 8674655), (2640, 7570608), (2816, 7097445), (2880, 6939724), (3168, 6308840), (3520, 5677956), (3840, 5204793), (3960, 5047072), (4224, 4731630), (5280, 3785304), (5760, 3469862), (6336, 3154420), (7040, 2838978), (7920, 2523536), (8448, 2365815), (10560, 1892652), (11520, 1734931), (12672, 1577210), (14080, 1419489), (15840, 1261768), (21120, 946326), (25344, 788605), (31680, 630884), (42240, 473163), (63360, 315442), (126720, 157721)]