20962395

素因数分解:

$3^{10}\times 5^1\times {\mathrm{71}}^1$

素因数の和:106

約数の個数: 44

約数和(自身を含む): 38263536

約数和(自身を除く): 17301141

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 243, 355, 405, 639, 729, 1065, 1215, 1917, 2187, 3195, 3645, 5751, 6561, 9585, 10935, 17253, 19683, 28755, 32805, 51759, 59049, 86265, 98415, 155277, 258795, 295245, 465831, 776385, 1397493, 2329155, 4192479, 6987465, 20962395]

約数ペア:

[(1, 20962395), (3, 6987465), (5, 4192479), (9, 2329155), (15, 1397493), (27, 776385), (45, 465831), (71, 295245), (81, 258795), (135, 155277), (213, 98415), (243, 86265), (355, 59049), (405, 51759), (639, 32805), (729, 28755), (1065, 19683), (1215, 17253), (1917, 10935), (2187, 9585), (3195, 6561), (3645, 5751)]