18656883

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 32288256

約数和(自身を除く): 13631373

約数列:

[1, 3, 7, 9, 21, 43, 63, 71, 97, 129, 213, 291, 301, 387, 497, 639, 679, 873, 903, 1491, 2037, 2709, 3053, 4171, 4473, 6111, 6887, 9159, 12513, 20661, 21371, 27477, 29197, 37539, 48209, 61983, 64113, 87591, 144627, 192339, 262773, 296141, 433881, 888423, 2072987, 2665269, 6218961, 18656883]

約数ペア:

[(1, 18656883), (3, 6218961), (7, 2665269), (9, 2072987), (21, 888423), (43, 433881), (63, 296141), (71, 262773), (97, 192339), (129, 144627), (213, 87591), (291, 64113), (301, 61983), (387, 48209), (497, 37539), (639, 29197), (679, 27477), (873, 21371), (903, 20661), (1491, 12513), (2037, 9159), (2709, 6887), (3053, 6111), (4171, 4473)]