18705303001

素因数分解:

$7^1\times {\mathrm{11}}^3\times {\mathrm{31}}^1\times {\mathrm{64763}}^1$

素因数の和:64834

約数の個数: 32

約数和(自身を含む): 24272510976

約数和(自身を除く): 5567207975

約数列:

[1, 7, 11, 31, 77, 121, 217, 341, 847, 1331, 2387, 3751, 9317, 26257, 41261, 64763, 288827, 453341, 712393, 2007653, 4986751, 7836323, 14053571, 22084183, 54854261, 86199553, 154589281, 242926013, 603396871, 1700482091, 2672186143, 18705303001]

約数ペア:

[(1, 18705303001), (7, 2672186143), (11, 1700482091), (31, 603396871), (77, 242926013), (121, 154589281), (217, 86199553), (341, 54854261), (847, 22084183), (1331, 14053571), (2387, 7836323), (3751, 4986751), (9317, 2007653), (26257, 712393), (41261, 453341), (64763, 288827)]