21280798616

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1\times {\mathrm{751}}^1$

素因数の和:1225

約数の個数: 128

約数和(自身を含む): 50301941760

約数和(自身を除く): 29021143144

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 157, 293, 308, 314, 586, 616, 628, 751, 1099, 1172, 1256, 1502, 1727, 2051, 2198, 2344, 3004, 3223, 3454, 4102, 4396, 5257, 6008, 6446, 6908, 8204, 8261, 8792, 10514, 12089, 12892, 13816, 16408, 16522, 21028, 22561, 24178, 25784, 33044, 42056, 45122, 46001, 48356, 57827, 66088, 90244, 92002, 96712, 115654, 117907, 180488, 184004, 220043, 231308, 235814, 322007, 368008, 440086, 462616, 471628, 506011, 644014, 825349, 880172, 943256, 1012022, 1288028, 1296977, 1540301, 1650698, 1760344, 2024044, 2420473, 2576056, 2593954, 3080602, 3301396, 3542077, 4048088, 4840946, 5187908, 6161204, 6602792, 7084154, 9078839, 9681892, 10375816, 12322408, 14168308, 16943311, 18157678, 19363784, 28336616, 33886622, 34546751, 36315356, 67773244, 69093502, 72630712, 135546488, 138187004, 241827257, 276374008, 380014261, 483654514, 760028522, 967309028, 1520057044, 1934618056, 2660099827, 3040114088, 5320199654, 10640399308, 21280798616]

約数ペア:

[(1, 21280798616), (2, 10640399308), (4, 5320199654), (7, 3040114088), (8, 2660099827), (11, 1934618056), (14, 1520057044), (22, 967309028), (28, 760028522), (44, 483654514), (56, 380014261), (77, 276374008), (88, 241827257), (154, 138187004), (157, 135546488), (293, 72630712), (308, 69093502), (314, 67773244), (586, 36315356), (616, 34546751), (628, 33886622), (751, 28336616), (1099, 19363784), (1172, 18157678), (1256, 16943311), (1502, 14168308), (1727, 12322408), (2051, 10375816), (2198, 9681892), (2344, 9078839), (3004, 7084154), (3223, 6602792), (3454, 6161204), (4102, 5187908), (4396, 4840946), (5257, 4048088), (6008, 3542077), (6446, 3301396), (6908, 3080602), (8204, 2593954), (8261, 2576056), (8792, 2420473), (10514, 2024044), (12089, 1760344), (12892, 1650698), (13816, 1540301), (16408, 1296977), (16522, 1288028), (21028, 1012022), (22561, 943256), (24178, 880172), (25784, 825349), (33044, 644014), (42056, 506011), (45122, 471628), (46001, 462616), (48356, 440086), (57827, 368008), (66088, 322007), (90244, 235814), (92002, 231308), (96712, 220043), (115654, 184004), (117907, 180488)]