81809812

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 177395400

約数和(自身を除く): 95585588

約数列:

[1, 2, 4, 7, 14, 28, 29, 37, 49, 58, 74, 98, 116, 148, 196, 203, 259, 389, 406, 518, 778, 812, 1036, 1073, 1421, 1556, 1813, 2146, 2723, 2842, 3626, 4292, 5446, 5684, 7252, 7511, 10892, 11281, 14393, 15022, 19061, 22562, 28786, 30044, 38122, 45124, 52577, 57572, 76244, 78967, 100751, 105154, 157934, 201502, 210308, 315868, 403004, 417397, 552769, 705257, 834794, 1105538, 1410514, 1669588, 2211076, 2821028, 2921779, 5843558, 11687116, 20452453, 40904906, 81809812]

約数ペア:

[(1, 81809812), (2, 40904906), (4, 20452453), (7, 11687116), (14, 5843558), (28, 2921779), (29, 2821028), (37, 2211076), (49, 1669588), (58, 1410514), (74, 1105538), (98, 834794), (116, 705257), (148, 552769), (196, 417397), (203, 403004), (259, 315868), (389, 210308), (406, 201502), (518, 157934), (778, 105154), (812, 100751), (1036, 78967), (1073, 76244), (1421, 57572), (1556, 52577), (1813, 45124), (2146, 38122), (2723, 30044), (2842, 28786), (3626, 22562), (4292, 19061), (5446, 15022), (5684, 14393), (7252, 11281), (7511, 10892)]