20215117

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{43}}^2$

素因数の和:157

約数の個数: 18

約数和(自身を含む): 23083242

約数和(自身を除く): 2868125

約数列:

[1, 13, 29, 43, 377, 559, 841, 1247, 1849, 10933, 16211, 24037, 36163, 53621, 470119, 697073, 1555009, 20215117]

約数ペア:

[(1, 20215117), (13, 1555009), (29, 697073), (43, 470119), (377, 53621), (559, 36163), (841, 24037), (1247, 16211), (1849, 10933)]