21948619

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1015

約数の個数: 24

約数和(自身を含む): 28531008

約数和(自身を除く): 6582389

約数列:

[1, 7, 11, 43, 49, 77, 301, 473, 539, 947, 2107, 3311, 6629, 10417, 23177, 40721, 46403, 72919, 285047, 447931, 510433, 1995329, 3135517, 21948619]

約数ペア:

[(1, 21948619), (7, 3135517), (11, 1995329), (43, 510433), (49, 447931), (77, 285047), (301, 72919), (473, 46403), (539, 40721), (947, 23177), (2107, 10417), (3311, 6629)]