21717531

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{881}}^1$

素因数の和:984

約数の個数: 32

約数和(自身を含む): 35562240

約数和(自身を除く): 13844709

約数列:

[1, 3, 9, 11, 27, 33, 83, 99, 249, 297, 747, 881, 913, 2241, 2643, 2739, 7929, 8217, 9691, 23787, 24651, 29073, 73123, 87219, 219369, 261657, 658107, 804353, 1974321, 2413059, 7239177, 21717531]

約数ペア:

[(1, 21717531), (3, 7239177), (9, 2413059), (11, 1974321), (27, 804353), (33, 658107), (83, 261657), (99, 219369), (249, 87219), (297, 73123), (747, 29073), (881, 24651), (913, 23787), (2241, 9691), (2643, 8217), (2739, 7929)]