861861

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:82

約数の個数: 48

約数和(自身を含む): 1608768

約数和(自身を除く): 746907

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 41, 49, 77, 91, 123, 143, 147, 231, 273, 287, 429, 451, 533, 539, 637, 861, 1001, 1353, 1599, 1617, 1911, 2009, 3003, 3157, 3731, 5863, 6027, 7007, 9471, 11193, 17589, 21021, 22099, 26117, 41041, 66297, 78351, 123123, 287287, 861861]

約数ペア:

[(1, 861861), (3, 287287), (7, 123123), (11, 78351), (13, 66297), (21, 41041), (33, 26117), (39, 22099), (41, 21021), (49, 17589), (77, 11193), (91, 9471), (123, 7007), (143, 6027), (147, 5863), (231, 3731), (273, 3157), (287, 3003), (429, 2009), (451, 1911), (533, 1617), (539, 1599), (637, 1353), (861, 1001)]