7964439

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19961}}^1$

素因数の和:19990

約数の個数: 16

約数和(自身を含む): 12775680

約数和(自身を除く): 4811241

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 19961, 59883, 139727, 379259, 419181, 1137777, 2654813, 7964439]

約数ペア:

[(1, 7964439), (3, 2654813), (7, 1137777), (19, 419181), (21, 379259), (57, 139727), (133, 59883), (399, 19961)]