21865689

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{593}}^1$

素因数の和:857

約数の個数: 24

約数和(自身を含む): 33637032

約数和(自身を除く): 11771343

約数列:

[1, 3, 9, 17, 51, 153, 241, 593, 723, 1779, 2169, 4097, 5337, 10081, 12291, 30243, 36873, 90729, 142913, 428739, 1286217, 2429521, 7288563, 21865689]

約数ペア:

[(1, 21865689), (3, 7288563), (9, 2429521), (17, 1286217), (51, 428739), (153, 142913), (241, 90729), (593, 36873), (723, 30243), (1779, 12291), (2169, 10081), (4097, 5337)]