21207032

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 50112000

約数和(自身を除く): 28904968

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 173, 199, 308, 346, 398, 616, 692, 796, 1211, 1384, 1393, 1592, 1903, 2189, 2422, 2786, 3806, 4378, 4844, 5572, 7612, 8756, 9688, 11144, 13321, 15224, 15323, 17512, 26642, 30646, 34427, 53284, 61292, 68854, 106568, 122584, 137708, 240989, 275416, 378697, 481978, 757394, 963956, 1514788, 1927912, 2650879, 3029576, 5301758, 10603516, 21207032]

約数ペア:

[(1, 21207032), (2, 10603516), (4, 5301758), (7, 3029576), (8, 2650879), (11, 1927912), (14, 1514788), (22, 963956), (28, 757394), (44, 481978), (56, 378697), (77, 275416), (88, 240989), (154, 137708), (173, 122584), (199, 106568), (308, 68854), (346, 61292), (398, 53284), (616, 34427), (692, 30646), (796, 26642), (1211, 17512), (1384, 15323), (1393, 15224), (1592, 13321), (1903, 11144), (2189, 9688), (2422, 8756), (2786, 7612), (3806, 5572), (4378, 4844)]