21555002

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:243

約数の個数: 48

約数和(自身を含む): 40087872

約数和(自身を除く): 18532870

約数列:

[1, 2, 7, 14, 23, 46, 49, 73, 98, 131, 146, 161, 262, 322, 511, 917, 1022, 1127, 1679, 1834, 2254, 3013, 3358, 3577, 6026, 6419, 7154, 9563, 11753, 12838, 19126, 21091, 23506, 42182, 66941, 82271, 133882, 147637, 164542, 219949, 295274, 439898, 468587, 937174, 1539643, 3079286, 10777501, 21555002]

約数ペア:

[(1, 21555002), (2, 10777501), (7, 3079286), (14, 1539643), (23, 937174), (46, 468587), (49, 439898), (73, 295274), (98, 219949), (131, 164542), (146, 147637), (161, 133882), (262, 82271), (322, 66941), (511, 42182), (917, 23506), (1022, 21091), (1127, 19126), (1679, 12838), (1834, 11753), (2254, 9563), (3013, 7154), (3358, 6419), (3577, 6026)]