18478881

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{317}}^1$

素因数の和:470

約数の個数: 32

約数和(自身を含む): 29306880

約数和(自身を除く): 10827999

約数列:

[1, 3, 9, 17, 27, 51, 127, 153, 317, 381, 459, 951, 1143, 2159, 2853, 3429, 5389, 6477, 8559, 16167, 19431, 40259, 48501, 58293, 120777, 145503, 362331, 684403, 1086993, 2053209, 6159627, 18478881]

約数ペア:

[(1, 18478881), (3, 6159627), (9, 2053209), (17, 1086993), (27, 684403), (51, 362331), (127, 145503), (153, 120777), (317, 58293), (381, 48501), (459, 40259), (951, 19431), (1143, 16167), (2159, 8559), (2853, 6477), (3429, 5389)]