1285697721

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{41}}^2\times {\mathrm{43}}^1$

素因数の和:164

約数の個数: 108

約数和(自身を含む): 2298923088

約数和(自身を除く): 1013225367

約数列:

[1, 3, 7, 11, 21, 33, 41, 43, 49, 77, 121, 123, 129, 147, 231, 287, 301, 363, 451, 473, 539, 847, 861, 903, 1353, 1419, 1617, 1681, 1763, 2009, 2107, 2541, 3157, 3311, 4961, 5043, 5203, 5289, 5929, 6027, 6321, 9471, 9933, 11767, 12341, 14883, 15609, 17787, 18491, 19393, 22099, 23177, 34727, 35301, 36421, 37023, 55473, 58179, 66297, 69531, 72283, 82369, 86387, 104181, 109263, 129437, 135751, 203401, 213323, 216849, 243089, 247107, 254947, 259161, 388311, 407253, 505981, 610203, 639969, 729267, 764841, 795113, 906059, 950257, 1423807, 1493261, 1517943, 2385339, 2718177, 2850771, 3541867, 4271421, 4479783, 5565791, 8746243, 9966649, 10452827, 10625601, 16697373, 26238729, 29899947, 31358481, 38960537, 61223701, 116881611, 183671103, 428565907, 1285697721]

約数ペア:

[(1, 1285697721), (3, 428565907), (7, 183671103), (11, 116881611), (21, 61223701), (33, 38960537), (41, 31358481), (43, 29899947), (49, 26238729), (77, 16697373), (121, 10625601), (123, 10452827), (129, 9966649), (147, 8746243), (231, 5565791), (287, 4479783), (301, 4271421), (363, 3541867), (451, 2850771), (473, 2718177), (539, 2385339), (847, 1517943), (861, 1493261), (903, 1423807), (1353, 950257), (1419, 906059), (1617, 795113), (1681, 764841), (1763, 729267), (2009, 639969), (2107, 610203), (2541, 505981), (3157, 407253), (3311, 388311), (4961, 259161), (5043, 254947), (5203, 247107), (5289, 243089), (5929, 216849), (6027, 213323), (6321, 203401), (9471, 135751), (9933, 129437), (11767, 109263), (12341, 104181), (14883, 86387), (15609, 82369), (17787, 72283), (18491, 69531), (19393, 66297), (22099, 58179), (23177, 55473), (34727, 37023), (35301, 36421)]