18538551

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{13463}}^1$

素因数の和:13492

約数の個数: 20

約数和(自身を含む): 29324592

約数和(自身を除く): 10786041

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 13463, 40389, 121167, 228871, 363501, 686613, 1090503, 2059839, 6179517, 18538551]

約数ペア:

[(1, 18538551), (3, 6179517), (9, 2059839), (17, 1090503), (27, 686613), (51, 363501), (81, 228871), (153, 121167), (459, 40389), (1377, 13463)]