19891157

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7321}}^1$

素因数の和:7364

約数の個数: 16

約数和(自身を含む): 24601920

約数和(自身を除く): 4710763

約数列:

[1, 11, 13, 19, 143, 209, 247, 2717, 7321, 80531, 95173, 139099, 1046903, 1530089, 1808287, 19891157]

約数ペア:

[(1, 19891157), (11, 1808287), (13, 1530089), (19, 1046903), (143, 139099), (209, 95173), (247, 80531), (2717, 7321)]