4020989

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{617}}^1$

素因数の和:657

約数の個数: 16

約数和(自身を含む): 4944000

約数和(自身を除く): 923011

約数列:

[1, 7, 19, 49, 133, 343, 617, 931, 4319, 6517, 11723, 30233, 82061, 211631, 574427, 4020989]

約数ペア:

[(1, 4020989), (7, 574427), (19, 211631), (49, 82061), (133, 30233), (343, 11723), (617, 6517), (931, 4319)]