18990369

素因数分解:

$3^4\times {\mathrm{97}}^1\times {\mathrm{2417}}^1$

素因数の和:2526

約数の個数: 20

約数和(自身を含む): 28672644

約数和(自身を除く): 9682275

約数列:

[1, 3, 9, 27, 81, 97, 291, 873, 2417, 2619, 7251, 7857, 21753, 65259, 195777, 234449, 703347, 2110041, 6330123, 18990369]

約数ペア:

[(1, 18990369), (3, 6330123), (9, 2110041), (27, 703347), (81, 234449), (97, 195777), (291, 65259), (873, 21753), (2417, 7857), (2619, 7251)]