21139668

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:266

約数の個数: 108

約数和(自身を含む): 61580064

約数和(自身を除く): 40440396

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 23, 33, 36, 44, 46, 66, 69, 92, 99, 121, 132, 138, 198, 207, 211, 242, 253, 276, 363, 396, 414, 422, 484, 506, 633, 726, 759, 828, 844, 1012, 1089, 1266, 1452, 1518, 1899, 2178, 2277, 2321, 2532, 2783, 3036, 3798, 4356, 4554, 4642, 4853, 5566, 6963, 7596, 8349, 9108, 9284, 9706, 11132, 13926, 14559, 16698, 19412, 20889, 25047, 25531, 27852, 29118, 33396, 41778, 43677, 50094, 51062, 53383, 58236, 76593, 83556, 87354, 100188, 102124, 106766, 153186, 160149, 174708, 213532, 229779, 306372, 320298, 459558, 480447, 587213, 640596, 919116, 960894, 1174426, 1761639, 1921788, 2348852, 3523278, 5284917, 7046556, 10569834, 21139668]

約数ペア:

[(1, 21139668), (2, 10569834), (3, 7046556), (4, 5284917), (6, 3523278), (9, 2348852), (11, 1921788), (12, 1761639), (18, 1174426), (22, 960894), (23, 919116), (33, 640596), (36, 587213), (44, 480447), (46, 459558), (66, 320298), (69, 306372), (92, 229779), (99, 213532), (121, 174708), (132, 160149), (138, 153186), (198, 106766), (207, 102124), (211, 100188), (242, 87354), (253, 83556), (276, 76593), (363, 58236), (396, 53383), (414, 51062), (422, 50094), (484, 43677), (506, 41778), (633, 33396), (726, 29118), (759, 27852), (828, 25531), (844, 25047), (1012, 20889), (1089, 19412), (1266, 16698), (1452, 14559), (1518, 13926), (1899, 11132), (2178, 9706), (2277, 9284), (2321, 9108), (2532, 8349), (2783, 7596), (3036, 6963), (3798, 5566), (4356, 4853), (4554, 4642)]