28347221

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1627}}^1$

素因数の和:1784

約数の個数: 16

約数和(自身を含む): 34383360

約数和(自身を除く): 6036139

約数列:

[1, 7, 19, 131, 133, 917, 1627, 2489, 11389, 17423, 30913, 213137, 216391, 1491959, 4049603, 28347221]

約数ペア:

[(1, 28347221), (7, 4049603), (19, 1491959), (131, 216391), (133, 213137), (917, 30913), (1627, 17423), (2489, 11389)]