20975724

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 216

約数和(自身を含む): 71705088

約数和(自身を除く): 50729364

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 23, 28, 33, 36, 42, 44, 46, 47, 49, 63, 66, 69, 77, 84, 92, 94, 98, 99, 126, 132, 138, 141, 147, 154, 161, 188, 196, 198, 207, 231, 252, 253, 276, 282, 294, 308, 322, 329, 396, 414, 423, 441, 462, 483, 506, 517, 539, 564, 588, 644, 658, 693, 759, 828, 846, 882, 924, 966, 987, 1012, 1034, 1078, 1081, 1127, 1316, 1386, 1449, 1518, 1551, 1617, 1692, 1764, 1771, 1932, 1974, 2068, 2156, 2162, 2254, 2277, 2303, 2772, 2898, 2961, 3036, 3102, 3234, 3243, 3381, 3542, 3619, 3948, 4324, 4508, 4554, 4606, 4653, 4851, 5313, 5796, 5922, 6204, 6468, 6486, 6762, 6909, 7084, 7238, 7567, 9108, 9212, 9306, 9702, 9729, 10143, 10626, 10857, 11844, 11891, 12397, 12972, 13524, 13818, 14476, 15134, 15939, 18612, 19404, 19458, 20286, 20727, 21252, 21714, 22701, 23782, 24794, 25333, 27636, 30268, 31878, 32571, 35673, 37191, 38916, 40572, 41454, 43428, 45402, 47564, 49588, 50666, 52969, 63756, 65142, 68103, 71346, 74382, 75999, 82908, 83237, 90804, 101332, 105938, 107019, 111573, 130284, 136206, 142692, 148764, 151998, 158907, 166474, 211876, 214038, 223146, 227997, 249711, 272412, 303996, 317814, 332948, 428076, 446292, 455994, 476721, 499422, 582659, 635628, 749133, 911988, 953442, 998844, 1165318, 1498266, 1747977, 1906884, 2330636, 2996532, 3495954, 5243931, 6991908, 10487862, 20975724]

約数ペア:

[(1, 20975724), (2, 10487862), (3, 6991908), (4, 5243931), (6, 3495954), (7, 2996532), (9, 2330636), (11, 1906884), (12, 1747977), (14, 1498266), (18, 1165318), (21, 998844), (22, 953442), (23, 911988), (28, 749133), (33, 635628), (36, 582659), (42, 499422), (44, 476721), (46, 455994), (47, 446292), (49, 428076), (63, 332948), (66, 317814), (69, 303996), (77, 272412), (84, 249711), (92, 227997), (94, 223146), (98, 214038), (99, 211876), (126, 166474), (132, 158907), (138, 151998), (141, 148764), (147, 142692), (154, 136206), (161, 130284), (188, 111573), (196, 107019), (198, 105938), (207, 101332), (231, 90804), (252, 83237), (253, 82908), (276, 75999), (282, 74382), (294, 71346), (308, 68103), (322, 65142), (329, 63756), (396, 52969), (414, 50666), (423, 49588), (441, 47564), (462, 45402), (483, 43428), (506, 41454), (517, 40572), (539, 38916), (564, 37191), (588, 35673), (644, 32571), (658, 31878), (693, 30268), (759, 27636), (828, 25333), (846, 24794), (882, 23782), (924, 22701), (966, 21714), (987, 21252), (1012, 20727), (1034, 20286), (1078, 19458), (1081, 19404), (1127, 18612), (1316, 15939), (1386, 15134), (1449, 14476), (1518, 13818), (1551, 13524), (1617, 12972), (1692, 12397), (1764, 11891), (1771, 11844), (1932, 10857), (1974, 10626), (2068, 10143), (2156, 9729), (2162, 9702), (2254, 9306), (2277, 9212), (2303, 9108), (2772, 7567), (2898, 7238), (2961, 7084), (3036, 6909), (3102, 6762), (3234, 6486), (3243, 6468), (3381, 6204), (3542, 5922), (3619, 5796), (3948, 5313), (4324, 4851), (4508, 4653), (4554, 4606)]