121240721

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:405

約数の個数: 24

約数和(自身を含む): 145851840

約数和(自身を除く): 24611119

約数列:

[1, 7, 31, 67, 217, 269, 469, 961, 1883, 2077, 6727, 8339, 14539, 18023, 58373, 64387, 126161, 258509, 450709, 558713, 1809563, 3910991, 17320103, 121240721]

約数ペア:

[(1, 121240721), (7, 17320103), (31, 3910991), (67, 1809563), (217, 558713), (269, 450709), (469, 258509), (961, 126161), (1883, 64387), (2077, 58373), (6727, 18023), (8339, 14539)]