20521907

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5563}}^1$

素因数の和:5618

約数の個数: 16

約数和(自身を含む): 25638912

約数和(自身を除く): 5117005

約数列:

[1, 7, 17, 31, 119, 217, 527, 3689, 5563, 38941, 94571, 172453, 661997, 1207171, 2931701, 20521907]

約数ペア:

[(1, 20521907), (7, 2931701), (17, 1207171), (31, 661997), (119, 172453), (217, 94571), (527, 38941), (3689, 5563)]