20120647131

素因数分解:

$3^7\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{421}}^1$

素因数の和:537

約数の個数: 96

約数和(自身を含む): 33388707520

約数和(自身を除く): 13268060389

約数列:

[1, 3, 9, 13, 27, 39, 41, 81, 117, 123, 243, 351, 369, 421, 533, 729, 1053, 1107, 1263, 1599, 1681, 2187, 3159, 3321, 3789, 4797, 5043, 5473, 9477, 9963, 11367, 14391, 15129, 16419, 17261, 21853, 28431, 29889, 34101, 43173, 45387, 49257, 51783, 65559, 89667, 102303, 129519, 136161, 147771, 155349, 196677, 224393, 306909, 388557, 408483, 443313, 466047, 590031, 673179, 707701, 920727, 1165671, 1225449, 1329939, 1398141, 1770093, 2019537, 2123103, 3676347, 3989817, 4194423, 5310279, 6058611, 6369309, 9200113, 11969451, 12583269, 15930837, 18175833, 19107927, 27600339, 37749807, 47792511, 54527499, 57323781, 82801017, 163582497, 171971343, 248403051, 490747491, 515914029, 745209153, 1547742087, 2235627459, 6706882377, 20120647131]

約数ペア:

[(1, 20120647131), (3, 6706882377), (9, 2235627459), (13, 1547742087), (27, 745209153), (39, 515914029), (41, 490747491), (81, 248403051), (117, 171971343), (123, 163582497), (243, 82801017), (351, 57323781), (369, 54527499), (421, 47792511), (533, 37749807), (729, 27600339), (1053, 19107927), (1107, 18175833), (1263, 15930837), (1599, 12583269), (1681, 11969451), (2187, 9200113), (3159, 6369309), (3321, 6058611), (3789, 5310279), (4797, 4194423), (5043, 3989817), (5473, 3676347), (9477, 2123103), (9963, 2019537), (11367, 1770093), (14391, 1398141), (15129, 1329939), (16419, 1225449), (17261, 1165671), (21853, 920727), (28431, 707701), (29889, 673179), (34101, 590031), (43173, 466047), (45387, 443313), (49257, 408483), (51783, 388557), (65559, 306909), (89667, 224393), (102303, 196677), (129519, 155349), (136161, 147771)]