20816415

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27211}}^1$

素因数の和:27239

約数の個数: 24

約数和(自身を含む): 38205648

約数和(自身を除く): 17389233

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27211, 81633, 136055, 244899, 408165, 462587, 1224495, 1387761, 2312935, 4163283, 6938805, 20816415]

約数ペア:

[(1, 20816415), (3, 6938805), (5, 4163283), (9, 2312935), (15, 1387761), (17, 1224495), (45, 462587), (51, 408165), (85, 244899), (153, 136055), (255, 81633), (765, 27211)]