39781287

素因数分解:

$3^5\times 7^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 74941776

約数和(自身を除く): 35160489

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 49, 63, 81, 91, 117, 147, 189, 243, 257, 273, 351, 441, 567, 637, 771, 819, 1053, 1323, 1701, 1799, 1911, 2313, 2457, 3159, 3341, 3969, 5397, 5733, 6939, 7371, 10023, 11907, 12593, 16191, 17199, 20817, 22113, 23387, 30069, 37779, 48573, 51597, 62451, 70161, 90207, 113337, 145719, 154791, 163709, 210483, 270621, 340011, 437157, 491127, 631449, 811863, 1020033, 1473381, 1894347, 3060099, 4420143, 5683041, 13260429, 39781287]

約数ペア:

[(1, 39781287), (3, 13260429), (7, 5683041), (9, 4420143), (13, 3060099), (21, 1894347), (27, 1473381), (39, 1020033), (49, 811863), (63, 631449), (81, 491127), (91, 437157), (117, 340011), (147, 270621), (189, 210483), (243, 163709), (257, 154791), (273, 145719), (351, 113337), (441, 90207), (567, 70161), (637, 62451), (771, 51597), (819, 48573), (1053, 37779), (1323, 30069), (1701, 23387), (1799, 22113), (1911, 20817), (2313, 17199), (2457, 16191), (3159, 12593), (3341, 11907), (3969, 10023), (5397, 7371), (5733, 6939)]