21701680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1$

素因数の和:315

約数の個数: 160

約数和(自身を含む): 67995648

約数和(自身を除く): 46293968

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 130, 140, 143, 154, 176, 182, 208, 220, 260, 271, 280, 286, 308, 364, 385, 440, 455, 520, 542, 560, 572, 616, 715, 728, 770, 880, 910, 1001, 1040, 1084, 1144, 1232, 1355, 1430, 1456, 1540, 1820, 1897, 2002, 2168, 2288, 2710, 2860, 2981, 3080, 3523, 3640, 3794, 4004, 4336, 5005, 5420, 5720, 5962, 6160, 7046, 7280, 7588, 8008, 9485, 10010, 10840, 11440, 11924, 14092, 14905, 15176, 16016, 17615, 18970, 20020, 20867, 21680, 23848, 24661, 28184, 29810, 30352, 35230, 37940, 38753, 40040, 41734, 47696, 49322, 56368, 59620, 70460, 75880, 77506, 80080, 83468, 98644, 104335, 119240, 123305, 140920, 151760, 155012, 166936, 193765, 197288, 208670, 238480, 246610, 271271, 281840, 310024, 333872, 387530, 394576, 417340, 493220, 542542, 620048, 775060, 834680, 986440, 1085084, 1356355, 1550120, 1669360, 1972880, 2170168, 2712710, 3100240, 4340336, 5425420, 10850840, 21701680]

約数ペア:

[(1, 21701680), (2, 10850840), (4, 5425420), (5, 4340336), (7, 3100240), (8, 2712710), (10, 2170168), (11, 1972880), (13, 1669360), (14, 1550120), (16, 1356355), (20, 1085084), (22, 986440), (26, 834680), (28, 775060), (35, 620048), (40, 542542), (44, 493220), (52, 417340), (55, 394576), (56, 387530), (65, 333872), (70, 310024), (77, 281840), (80, 271271), (88, 246610), (91, 238480), (104, 208670), (110, 197288), (112, 193765), (130, 166936), (140, 155012), (143, 151760), (154, 140920), (176, 123305), (182, 119240), (208, 104335), (220, 98644), (260, 83468), (271, 80080), (280, 77506), (286, 75880), (308, 70460), (364, 59620), (385, 56368), (440, 49322), (455, 47696), (520, 41734), (542, 40040), (560, 38753), (572, 37940), (616, 35230), (715, 30352), (728, 29810), (770, 28184), (880, 24661), (910, 23848), (1001, 21680), (1040, 20867), (1084, 20020), (1144, 18970), (1232, 17615), (1355, 16016), (1430, 15176), (1456, 14905), (1540, 14092), (1820, 11924), (1897, 11440), (2002, 10840), (2168, 10010), (2288, 9485), (2710, 8008), (2860, 7588), (2981, 7280), (3080, 7046), (3523, 6160), (3640, 5962), (3794, 5720), (4004, 5420), (4336, 5005)]