21420923

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:386

約数の個数: 16

約数和(自身を含む): 23358720

約数和(自身を除く): 1937797

約数列:

[1, 19, 43, 157, 167, 817, 2983, 3173, 6751, 7181, 26219, 128269, 136439, 498161, 1127417, 21420923]

約数ペア:

[(1, 21420923), (19, 1127417), (43, 498161), (157, 136439), (167, 128269), (817, 26219), (2983, 7181), (3173, 6751)]