20392407

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 35223552

約数和(自身を除く): 14831145

約数列:

[1, 3, 7, 9, 21, 47, 63, 71, 97, 141, 213, 291, 329, 423, 497, 639, 679, 873, 987, 1491, 2037, 2961, 3337, 4473, 4559, 6111, 6887, 10011, 13677, 20661, 23359, 30033, 31913, 41031, 48209, 61983, 70077, 95739, 144627, 210231, 287217, 323689, 433881, 971067, 2265823, 2913201, 6797469, 20392407]

約数ペア:

[(1, 20392407), (3, 6797469), (7, 2913201), (9, 2265823), (21, 971067), (47, 433881), (63, 323689), (71, 287217), (97, 210231), (141, 144627), (213, 95739), (291, 70077), (329, 61983), (423, 48209), (497, 41031), (639, 31913), (679, 30033), (873, 23359), (987, 20661), (1491, 13677), (2037, 10011), (2961, 6887), (3337, 6111), (4473, 4559)]