20681661

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:202

約数の個数: 64

約数和(自身を含む): 37933056

約数和(自身を除く): 17251395

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 71, 77, 91, 97, 143, 213, 231, 273, 291, 429, 497, 679, 781, 923, 1001, 1067, 1261, 1491, 2037, 2343, 2769, 3003, 3201, 3783, 5467, 6461, 6887, 7469, 8827, 10153, 13871, 16401, 19383, 20661, 22407, 26481, 30459, 41613, 48209, 71071, 75757, 89531, 97097, 144627, 213213, 227271, 268593, 291291, 530299, 626717, 984841, 1590897, 1880151, 2954523, 6893887, 20681661]

約数ペア:

[(1, 20681661), (3, 6893887), (7, 2954523), (11, 1880151), (13, 1590897), (21, 984841), (33, 626717), (39, 530299), (71, 291291), (77, 268593), (91, 227271), (97, 213213), (143, 144627), (213, 97097), (231, 89531), (273, 75757), (291, 71071), (429, 48209), (497, 41613), (679, 30459), (781, 26481), (923, 22407), (1001, 20661), (1067, 19383), (1261, 16401), (1491, 13871), (2037, 10153), (2343, 8827), (2769, 7469), (3003, 6887), (3201, 6461), (3783, 5467)]