205758

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:109

約数の個数: 48

約数和(自身を含む): 539136

約数和(自身を除く): 333378

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 23, 42, 46, 63, 69, 71, 126, 138, 142, 161, 207, 213, 322, 414, 426, 483, 497, 639, 966, 994, 1278, 1449, 1491, 1633, 2898, 2982, 3266, 4473, 4899, 8946, 9798, 11431, 14697, 22862, 29394, 34293, 68586, 102879, 205758]

約数ペア:

[(1, 205758), (2, 102879), (3, 68586), (6, 34293), (7, 29394), (9, 22862), (14, 14697), (18, 11431), (21, 9798), (23, 8946), (42, 4899), (46, 4473), (63, 3266), (69, 2982), (71, 2898), (126, 1633), (138, 1491), (142, 1449), (161, 1278), (207, 994), (213, 966), (322, 639), (414, 497), (426, 483)]