19686321

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{10567}}^1$

素因数の和:10602

約数の個数: 20

約数和(自身を含む): 30689472

約数和(自身を除く): 11003151

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 10567, 31701, 95103, 243041, 285309, 729123, 855927, 2187369, 6562107, 19686321]

約数ペア:

[(1, 19686321), (3, 6562107), (9, 2187369), (23, 855927), (27, 729123), (69, 285309), (81, 243041), (207, 95103), (621, 31701), (1863, 10567)]