20704815

素因数分解:

$3^5\times 5^1\times {\mathrm{17041}}^1$

素因数の和:17061

約数の個数: 24

約数和(自身を含む): 37219728

約数和(自身を除く): 16514913

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17041, 51123, 85205, 153369, 255615, 460107, 766845, 1380321, 2300535, 4140963, 6901605, 20704815]

約数ペア:

[(1, 20704815), (3, 6901605), (5, 4140963), (9, 2300535), (15, 1380321), (27, 766845), (45, 460107), (81, 255615), (135, 153369), (243, 85205), (405, 51123), (1215, 17041)]