20905719

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{1039}}^1$

素因数の和:1414

約数の個数: 16

約数和(自身を含む): 29452800

約数和(自身を除く): 8547081

約数列:

[1, 3, 19, 57, 353, 1039, 1059, 3117, 6707, 19741, 20121, 59223, 366767, 1100301, 6968573, 20905719]

約数ペア:

[(1, 20905719), (3, 6968573), (19, 1100301), (57, 366767), (353, 59223), (1039, 20121), (1059, 19741), (3117, 6707)]