20991696

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{479}}^1$

素因数の和:584

約数の個数: 80

約数和(自身を含む): 59996160

約数和(自身を除く): 39004464

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 83, 88, 132, 166, 176, 249, 264, 332, 479, 498, 528, 664, 913, 958, 996, 1328, 1437, 1826, 1916, 1992, 2739, 2874, 3652, 3832, 3984, 5269, 5478, 5748, 7304, 7664, 10538, 10956, 11496, 14608, 15807, 21076, 21912, 22992, 31614, 39757, 42152, 43824, 63228, 79514, 84304, 119271, 126456, 159028, 238542, 252912, 318056, 437327, 477084, 636112, 874654, 954168, 1311981, 1749308, 1908336, 2623962, 3498616, 5247924, 6997232, 10495848, 20991696]

約数ペア:

[(1, 20991696), (2, 10495848), (3, 6997232), (4, 5247924), (6, 3498616), (8, 2623962), (11, 1908336), (12, 1749308), (16, 1311981), (22, 954168), (24, 874654), (33, 636112), (44, 477084), (48, 437327), (66, 318056), (83, 252912), (88, 238542), (132, 159028), (166, 126456), (176, 119271), (249, 84304), (264, 79514), (332, 63228), (479, 43824), (498, 42152), (528, 39757), (664, 31614), (913, 22992), (958, 21912), (996, 21076), (1328, 15807), (1437, 14608), (1826, 11496), (1916, 10956), (1992, 10538), (2739, 7664), (2874, 7304), (3652, 5748), (3832, 5478), (3984, 5269)]