18978783

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{1889}}^1$

素因数の和:2106

約数の個数: 16

約数和(自身を含む): 26943840

約数和(自身を除く): 7965057

約数列:

[1, 3, 17, 51, 197, 591, 1889, 3349, 5667, 10047, 32113, 96339, 372133, 1116399, 6326261, 18978783]

約数ペア:

[(1, 18978783), (3, 6326261), (17, 1116399), (51, 372133), (197, 96339), (591, 32113), (1889, 10047), (3349, 5667)]