81141228

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2161}}^1$

素因数の和:2327

約数の個数: 72

約数和(自身を含む): 236090400

約数和(自身を除く): 154949172

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 149, 252, 298, 447, 596, 894, 1043, 1341, 1788, 2086, 2161, 2682, 3129, 4172, 4322, 5364, 6258, 6483, 8644, 9387, 12516, 12966, 15127, 18774, 19449, 25932, 30254, 37548, 38898, 45381, 60508, 77796, 90762, 136143, 181524, 272286, 321989, 544572, 643978, 965967, 1287956, 1931934, 2253923, 2897901, 3863868, 4507846, 5795802, 6761769, 9015692, 11591604, 13523538, 20285307, 27047076, 40570614, 81141228]

約数ペア:

[(1, 81141228), (2, 40570614), (3, 27047076), (4, 20285307), (6, 13523538), (7, 11591604), (9, 9015692), (12, 6761769), (14, 5795802), (18, 4507846), (21, 3863868), (28, 2897901), (36, 2253923), (42, 1931934), (63, 1287956), (84, 965967), (126, 643978), (149, 544572), (252, 321989), (298, 272286), (447, 181524), (596, 136143), (894, 90762), (1043, 77796), (1341, 60508), (1788, 45381), (2086, 38898), (2161, 37548), (2682, 30254), (3129, 25932), (4172, 19449), (4322, 18774), (5364, 15127), (6258, 12966), (6483, 12516), (8644, 9387)]