389642

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:301

約数の個数: 16

約数和(自身を含む): 648000

約数和(自身を除く): 258358

約数列:

[1, 2, 11, 22, 89, 178, 199, 398, 979, 1958, 2189, 4378, 17711, 35422, 194821, 389642]

約数ペア:

[(1, 389642), (2, 194821), (11, 35422), (22, 17711), (89, 4378), (178, 2189), (199, 1958), (398, 979)]