18937071

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5437}}^1$

素因数の和:5492

約数の個数: 20

約数和(自身を含む): 28951912

約数和(自身を除く): 10014841

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5437, 16311, 48933, 146799, 233791, 440397, 701373, 2104119, 6312357, 18937071]

約数ペア:

[(1, 18937071), (3, 6312357), (9, 2104119), (27, 701373), (43, 440397), (81, 233791), (129, 146799), (387, 48933), (1161, 16311), (3483, 5437)]