20987131

素因数分解:

${\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:402

約数の個数: 16

約数和(自身を含む): 23482368

約数和(自身を除く): 2495237

約数列:

[1, 11, 83, 127, 181, 913, 1397, 1991, 10541, 15023, 22987, 115951, 165253, 252857, 1907921, 20987131]

約数ペア:

[(1, 20987131), (11, 1907921), (83, 252857), (127, 165253), (181, 115951), (913, 22987), (1397, 15023), (1991, 10541)]