128220911

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{74159}}^1$

素因数の和:74198

約数の個数: 16

約数和(自身を含む): 166118400

約数和(自身を除く): 37897489

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 74159, 519113, 964067, 1409021, 6748469, 9863147, 18317273, 128220911]

約数ペア:

[(1, 128220911), (7, 18317273), (13, 9863147), (19, 6748469), (91, 1409021), (133, 964067), (247, 519113), (1729, 74159)]