21741643

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:248

約数の個数: 36

約数和(自身を含む): 29414280

約数和(自身を除く): 7672637

約数列:

[1, 7, 11, 19, 49, 77, 121, 133, 193, 209, 539, 847, 931, 1351, 1463, 2123, 2299, 3667, 5929, 9457, 10241, 14861, 16093, 23353, 25669, 40337, 104027, 112651, 163471, 179683, 282359, 443707, 1144297, 1976513, 3105949, 21741643]

約数ペア:

[(1, 21741643), (7, 3105949), (11, 1976513), (19, 1144297), (49, 443707), (77, 282359), (121, 179683), (133, 163471), (193, 112651), (209, 104027), (539, 40337), (847, 25669), (931, 23353), (1351, 16093), (1463, 14861), (2123, 10241), (2299, 9457), (3667, 5929)]