18625168

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{311}}^1$

素因数の和:535

約数の個数: 40

約数和(自身を含む): 38301120

約数和(自身を除く): 19675952

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 197, 304, 311, 394, 622, 788, 1244, 1576, 2488, 3152, 3743, 4976, 5909, 7486, 11818, 14972, 23636, 29944, 47272, 59888, 61267, 94544, 122534, 245068, 490136, 980272, 1164073, 2328146, 4656292, 9312584, 18625168]

約数ペア:

[(1, 18625168), (2, 9312584), (4, 4656292), (8, 2328146), (16, 1164073), (19, 980272), (38, 490136), (76, 245068), (152, 122534), (197, 94544), (304, 61267), (311, 59888), (394, 47272), (622, 29944), (788, 23636), (1244, 14972), (1576, 11818), (2488, 7486), (3152, 5909), (3743, 4976)]