20204072

素因数分解:

$2^3\times 7^3\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 45600000

約数和(自身を除く): 25395928

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 49, 56, 74, 98, 148, 196, 199, 259, 296, 343, 392, 398, 518, 686, 796, 1036, 1372, 1393, 1592, 1813, 2072, 2744, 2786, 3626, 5572, 7252, 7363, 9751, 11144, 12691, 14504, 14726, 19502, 25382, 29452, 39004, 50764, 51541, 58904, 68257, 78008, 101528, 103082, 136514, 206164, 273028, 360787, 412328, 546056, 721574, 1443148, 2525509, 2886296, 5051018, 10102036, 20204072]

約数ペア:

[(1, 20204072), (2, 10102036), (4, 5051018), (7, 2886296), (8, 2525509), (14, 1443148), (28, 721574), (37, 546056), (49, 412328), (56, 360787), (74, 273028), (98, 206164), (148, 136514), (196, 103082), (199, 101528), (259, 78008), (296, 68257), (343, 58904), (392, 51541), (398, 50764), (518, 39004), (686, 29452), (796, 25382), (1036, 19502), (1372, 14726), (1393, 14504), (1592, 12691), (1813, 11144), (2072, 9751), (2744, 7363), (2786, 7252), (3626, 5572)]