638015859

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{2141}}^1$

素因数の和:2449

約数の個数: 40

約数和(自身を含む): 1030507632

約数和(自身を除く): 392491773

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 283, 351, 849, 1053, 2141, 2547, 3679, 6423, 7641, 11037, 19269, 22923, 27833, 33111, 57807, 83499, 99333, 173421, 250497, 297999, 605903, 751491, 1817709, 2254473, 5453127, 7876739, 16359381, 23630217, 49078143, 70890651, 212671953, 638015859]

約数ペア:

[(1, 638015859), (3, 212671953), (9, 70890651), (13, 49078143), (27, 23630217), (39, 16359381), (81, 7876739), (117, 5453127), (283, 2254473), (351, 1817709), (849, 751491), (1053, 605903), (2141, 297999), (2547, 250497), (3679, 173421), (6423, 99333), (7641, 83499), (11037, 57807), (19269, 33111), (22923, 27833)]