81708660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1423}}^1$

素因数の和:1478

約数の個数: 144

約数和(自身を含む): 279901440

約数和(自身を除く): 198192780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 29, 30, 33, 36, 44, 45, 55, 58, 60, 66, 87, 90, 99, 110, 116, 132, 145, 165, 174, 180, 198, 220, 261, 290, 319, 330, 348, 396, 435, 495, 522, 580, 638, 660, 870, 957, 990, 1044, 1276, 1305, 1423, 1595, 1740, 1914, 1980, 2610, 2846, 2871, 3190, 3828, 4269, 4785, 5220, 5692, 5742, 6380, 7115, 8538, 9570, 11484, 12807, 14230, 14355, 15653, 17076, 19140, 21345, 25614, 28460, 28710, 31306, 41267, 42690, 46959, 51228, 57420, 62612, 64035, 78265, 82534, 85380, 93918, 123801, 128070, 140877, 156530, 165068, 187836, 206335, 234795, 247602, 256140, 281754, 313060, 371403, 412670, 453937, 469590, 495204, 563508, 619005, 704385, 742806, 825340, 907874, 939180, 1238010, 1361811, 1408770, 1485612, 1815748, 1857015, 2269685, 2476020, 2723622, 2817540, 3714030, 4085433, 4539370, 5447244, 6809055, 7428060, 8170866, 9078740, 13618110, 16341732, 20427165, 27236220, 40854330, 81708660]

約数ペア:

[(1, 81708660), (2, 40854330), (3, 27236220), (4, 20427165), (5, 16341732), (6, 13618110), (9, 9078740), (10, 8170866), (11, 7428060), (12, 6809055), (15, 5447244), (18, 4539370), (20, 4085433), (22, 3714030), (29, 2817540), (30, 2723622), (33, 2476020), (36, 2269685), (44, 1857015), (45, 1815748), (55, 1485612), (58, 1408770), (60, 1361811), (66, 1238010), (87, 939180), (90, 907874), (99, 825340), (110, 742806), (116, 704385), (132, 619005), (145, 563508), (165, 495204), (174, 469590), (180, 453937), (198, 412670), (220, 371403), (261, 313060), (290, 281754), (319, 256140), (330, 247602), (348, 234795), (396, 206335), (435, 187836), (495, 165068), (522, 156530), (580, 140877), (638, 128070), (660, 123801), (870, 93918), (957, 85380), (990, 82534), (1044, 78265), (1276, 64035), (1305, 62612), (1423, 57420), (1595, 51228), (1740, 46959), (1914, 42690), (1980, 41267), (2610, 31306), (2846, 28710), (2871, 28460), (3190, 25614), (3828, 21345), (4269, 19140), (4785, 17076), (5220, 15653), (5692, 14355), (5742, 14230), (6380, 12807), (7115, 11484), (8538, 9570)]