21344939

素因数分解:

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

素因数の和:423

約数の個数: 18

約数和(自身を含む): 27223884

約数和(自身を除く): 5878945

約数列:

[1, 7, 11, 49, 77, 199, 539, 1393, 2189, 9751, 15323, 39601, 107261, 277207, 435611, 1940449, 3049277, 21344939]

約数ペア:

[(1, 21344939), (7, 3049277), (11, 1940449), (49, 435611), (77, 277207), (199, 107261), (539, 39601), (1393, 15323), (2189, 9751)]