208388621

素因数分解:

$7^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:334

約数の個数: 32

約数和(自身を含む): 253440000

約数和(自身を除く): 45051379

約数列:

[1, 7, 43, 49, 71, 199, 301, 343, 497, 1393, 2107, 3053, 3479, 8557, 9751, 14129, 14749, 21371, 24353, 59899, 68257, 98903, 149597, 419293, 607547, 692321, 1047179, 2935051, 4252829, 4846247, 29769803, 208388621]

約数ペア:

[(1, 208388621), (7, 29769803), (43, 4846247), (49, 4252829), (71, 2935051), (199, 1047179), (301, 692321), (343, 607547), (497, 419293), (1393, 149597), (2107, 98903), (3053, 68257), (3479, 59899), (8557, 24353), (9751, 21371), (14129, 14749)]