21716849

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{937}}^1$

素因数の和:1005

約数の個数: 24

約数和(自身を含む): 28230048

約数和(自身を除く): 6513199

約数列:

[1, 7, 11, 43, 49, 77, 301, 473, 539, 937, 2107, 3311, 6559, 10307, 23177, 40291, 45913, 72149, 282037, 443201, 505043, 1974259, 3102407, 21716849]

約数ペア:

[(1, 21716849), (7, 3102407), (11, 1974259), (43, 505043), (49, 443201), (77, 282037), (301, 72149), (473, 45913), (539, 40291), (937, 23177), (2107, 10307), (3311, 6559)]