81513895

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{2969}}^1$

素因数の和:3027

約数の個数: 24

約数和(自身を含む): 109414800

約数和(自身を除く): 27900905

約数列:

[1, 5, 17, 19, 85, 95, 289, 323, 1445, 1615, 2969, 5491, 14845, 27455, 50473, 56411, 252365, 282055, 858041, 958987, 4290205, 4794935, 16302779, 81513895]

約数ペア:

[(1, 81513895), (5, 16302779), (17, 4794935), (19, 4290205), (85, 958987), (95, 858041), (289, 282055), (323, 252365), (1445, 56411), (1615, 50473), (2969, 27455), (5491, 14845)]