20780903

素因数分解:

${\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{1201}}^1$

素因数の和:1247

約数の個数: 16

約数和(自身を含む): 24636192

約数和(自身を除く): 3855289

約数列:

[1, 11, 13, 121, 143, 1201, 1331, 1573, 13211, 15613, 17303, 145321, 171743, 1598531, 1889173, 20780903]

約数ペア:

[(1, 20780903), (11, 1889173), (13, 1598531), (121, 171743), (143, 145321), (1201, 17303), (1331, 15613), (1573, 13211)]