1311989

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{281}}^1$

素因数の和:340

約数の個数: 16

約数和(自身を含む): 1624320

約数和(自身を除く): 312331

約数列:

[1, 7, 23, 29, 161, 203, 281, 667, 1967, 4669, 6463, 8149, 45241, 57043, 187427, 1311989]

約数ペア:

[(1, 1311989), (7, 187427), (23, 57043), (29, 45241), (161, 8149), (203, 6463), (281, 4669), (667, 1967)]