18921539

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{617}}^1$

素因数の和:974

約数の個数: 16

約数和(自身を含む): 23395008

約数和(自身を除く): 4473469

約数列:

[1, 7, 13, 91, 337, 617, 2359, 4319, 4381, 8021, 30667, 56147, 207929, 1455503, 2703077, 18921539]

約数ペア:

[(1, 18921539), (7, 2703077), (13, 1455503), (91, 207929), (337, 56147), (617, 30667), (2359, 8021), (4319, 4381)]