81428004

素因数分解:

$2^2\times 3^4\times 7^2\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:276

約数の個数: 180

約数和(自身を含む): 259547904

約数和(自身を除く): 178119900

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 27, 28, 36, 42, 46, 49, 54, 63, 69, 81, 84, 92, 98, 108, 126, 138, 147, 161, 162, 189, 196, 207, 223, 252, 276, 294, 322, 324, 378, 414, 441, 446, 483, 567, 588, 621, 644, 669, 756, 828, 882, 892, 966, 1127, 1134, 1242, 1323, 1338, 1449, 1561, 1764, 1863, 1932, 2007, 2254, 2268, 2484, 2646, 2676, 2898, 3122, 3381, 3726, 3969, 4014, 4347, 4508, 4683, 5129, 5292, 5796, 6021, 6244, 6762, 7452, 7938, 8028, 8694, 9366, 10143, 10258, 10927, 12042, 13041, 13524, 14049, 15387, 15876, 17388, 18063, 18732, 20286, 20516, 21854, 24084, 26082, 28098, 30429, 30774, 32781, 35903, 36126, 40572, 42147, 43708, 46161, 52164, 56196, 60858, 61548, 65562, 71806, 72252, 84294, 91287, 92322, 98343, 107709, 121716, 126441, 131124, 138483, 143612, 168588, 182574, 184644, 196686, 215418, 251321, 252882, 276966, 295029, 323127, 365148, 393372, 415449, 430836, 502642, 505764, 553932, 590058, 646254, 753963, 830898, 885087, 969381, 1005284, 1180116, 1292508, 1507926, 1661796, 1770174, 1938762, 2261889, 2908143, 3015852, 3540348, 3877524, 4523778, 5816286, 6785667, 9047556, 11632572, 13571334, 20357001, 27142668, 40714002, 81428004]

約数ペア:

[(1, 81428004), (2, 40714002), (3, 27142668), (4, 20357001), (6, 13571334), (7, 11632572), (9, 9047556), (12, 6785667), (14, 5816286), (18, 4523778), (21, 3877524), (23, 3540348), (27, 3015852), (28, 2908143), (36, 2261889), (42, 1938762), (46, 1770174), (49, 1661796), (54, 1507926), (63, 1292508), (69, 1180116), (81, 1005284), (84, 969381), (92, 885087), (98, 830898), (108, 753963), (126, 646254), (138, 590058), (147, 553932), (161, 505764), (162, 502642), (189, 430836), (196, 415449), (207, 393372), (223, 365148), (252, 323127), (276, 295029), (294, 276966), (322, 252882), (324, 251321), (378, 215418), (414, 196686), (441, 184644), (446, 182574), (483, 168588), (567, 143612), (588, 138483), (621, 131124), (644, 126441), (669, 121716), (756, 107709), (828, 98343), (882, 92322), (892, 91287), (966, 84294), (1127, 72252), (1134, 71806), (1242, 65562), (1323, 61548), (1338, 60858), (1449, 56196), (1561, 52164), (1764, 46161), (1863, 43708), (1932, 42147), (2007, 40572), (2254, 36126), (2268, 35903), (2484, 32781), (2646, 30774), (2676, 30429), (2898, 28098), (3122, 26082), (3381, 24084), (3726, 21854), (3969, 20516), (4014, 20286), (4347, 18732), (4508, 18063), (4683, 17388), (5129, 15876), (5292, 15387), (5796, 14049), (6021, 13524), (6244, 13041), (6762, 12042), (7452, 10927), (7938, 10258), (8028, 10143), (8694, 9366)]