20574008

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{479}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 27809992

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 59, 91, 104, 118, 182, 236, 364, 413, 472, 479, 728, 767, 826, 958, 1534, 1652, 1916, 3068, 3304, 3353, 3832, 5369, 6136, 6227, 6706, 10738, 12454, 13412, 21476, 24908, 26824, 28261, 42952, 43589, 49816, 56522, 87178, 113044, 174356, 197827, 226088, 348712, 367393, 395654, 734786, 791308, 1469572, 1582616, 2571751, 2939144, 5143502, 10287004, 20574008]

約数ペア:

[(1, 20574008), (2, 10287004), (4, 5143502), (7, 2939144), (8, 2571751), (13, 1582616), (14, 1469572), (26, 791308), (28, 734786), (52, 395654), (56, 367393), (59, 348712), (91, 226088), (104, 197827), (118, 174356), (182, 113044), (236, 87178), (364, 56522), (413, 49816), (472, 43589), (479, 42952), (728, 28261), (767, 26824), (826, 24908), (958, 21476), (1534, 13412), (1652, 12454), (1916, 10738), (3068, 6706), (3304, 6227), (3353, 6136), (3832, 5369)]