21114247

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{911}}^1$

素因数の和:979

約数の個数: 24

約数和(自身を含む): 27447552

約数和(自身を除く): 6333305

約数列:

[1, 7, 11, 43, 49, 77, 301, 473, 539, 911, 2107, 3311, 6377, 10021, 23177, 39173, 44639, 70147, 274211, 430903, 491029, 1919477, 3016321, 21114247]

約数ペア:

[(1, 21114247), (7, 3016321), (11, 1919477), (43, 491029), (49, 430903), (77, 274211), (301, 70147), (473, 44639), (539, 39173), (911, 23177), (2107, 10021), (3311, 6377)]