20889765

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11903}}^1$

素因数の和:11930

約数の個数: 32

約数和(自身を含む): 39997440

約数和(自身を除く): 19107675

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11903, 35709, 59515, 107127, 154739, 178545, 321381, 464217, 535635, 773695, 1392651, 1606905, 2321085, 4177953, 6963255, 20889765]

約数ペア:

[(1, 20889765), (3, 6963255), (5, 4177953), (9, 2321085), (13, 1606905), (15, 1392651), (27, 773695), (39, 535635), (45, 464217), (65, 321381), (117, 178545), (135, 154739), (195, 107127), (351, 59515), (585, 35709), (1755, 11903)]