20486851

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 26265600

約数和(自身を除く): 5778749

約数列:

[1, 7, 11, 49, 77, 191, 199, 539, 1337, 1393, 2101, 2189, 9359, 9751, 14707, 15323, 38009, 102949, 107261, 266063, 418099, 1862441, 2926693, 20486851]

約数ペア:

[(1, 20486851), (7, 2926693), (11, 1862441), (49, 418099), (77, 266063), (191, 107261), (199, 102949), (539, 38009), (1337, 15323), (1393, 14707), (2101, 9751), (2189, 9359)]