21286419

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2143}}^1$

素因数の和:2207

約数の個数: 32

約数和(自身を含む): 36225024

約数和(自身を除く): 14938605

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 129, 231, 301, 473, 903, 1419, 2143, 3311, 6429, 9933, 15001, 23573, 45003, 70719, 92149, 165011, 276447, 495033, 645043, 1013639, 1935129, 3040917, 7095473, 21286419]

約数ペア:

[(1, 21286419), (3, 7095473), (7, 3040917), (11, 1935129), (21, 1013639), (33, 645043), (43, 495033), (77, 276447), (129, 165011), (231, 92149), (301, 70719), (473, 45003), (903, 23573), (1419, 15001), (2143, 9933), (3311, 6429)]