81608120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{193}}^1$

素因数の和:277

約数の個数: 96

約数和(自身を含む): 208053360

約数和(自身を除く): 126445240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 193, 220, 248, 310, 341, 386, 440, 620, 682, 772, 961, 965, 1240, 1364, 1544, 1705, 1922, 1930, 2123, 2728, 3410, 3844, 3860, 4246, 4805, 5983, 6820, 7688, 7720, 8492, 9610, 10571, 10615, 11966, 13640, 16984, 19220, 21142, 21230, 23932, 29915, 38440, 42284, 42460, 47864, 52855, 59830, 65813, 84568, 84920, 105710, 119660, 131626, 185473, 211420, 239320, 263252, 329065, 370946, 422840, 526504, 658130, 741892, 927365, 1316260, 1483784, 1854730, 2040203, 2632520, 3709460, 4080406, 7418920, 8160812, 10201015, 16321624, 20402030, 40804060, 81608120]

約数ペア:

[(1, 81608120), (2, 40804060), (4, 20402030), (5, 16321624), (8, 10201015), (10, 8160812), (11, 7418920), (20, 4080406), (22, 3709460), (31, 2632520), (40, 2040203), (44, 1854730), (55, 1483784), (62, 1316260), (88, 927365), (110, 741892), (124, 658130), (155, 526504), (193, 422840), (220, 370946), (248, 329065), (310, 263252), (341, 239320), (386, 211420), (440, 185473), (620, 131626), (682, 119660), (772, 105710), (961, 84920), (965, 84568), (1240, 65813), (1364, 59830), (1544, 52855), (1705, 47864), (1922, 42460), (1930, 42284), (2123, 38440), (2728, 29915), (3410, 23932), (3844, 21230), (3860, 21142), (4246, 19220), (4805, 16984), (5983, 13640), (6820, 11966), (7688, 10615), (7720, 10571), (8492, 9610)]