18997959

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{8663}}^1$

素因数の和:8726

約数の個数: 16

約数和(自身を含む): 27447552

約数和(自身を除く): 8449593

約数列:

[1, 3, 17, 43, 51, 129, 731, 2193, 8663, 25989, 147271, 372509, 441813, 1117527, 6332653, 18997959]

約数ペア:

[(1, 18997959), (3, 6332653), (17, 1117527), (43, 441813), (51, 372509), (129, 147271), (731, 25989), (2193, 8663)]