18937881

素因数分解:

$3^4\times {\mathrm{17}}^2\times {\mathrm{809}}^1$

素因数の和:855

約数の個数: 30

約数和(自身を含む): 30089070

約数和(自身を除く): 11151189

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 289, 459, 809, 867, 1377, 2427, 2601, 7281, 7803, 13753, 21843, 23409, 41259, 65529, 123777, 233801, 371331, 701403, 1113993, 2104209, 6312627, 18937881]

約数ペア:

[(1, 18937881), (3, 6312627), (9, 2104209), (17, 1113993), (27, 701403), (51, 371331), (81, 233801), (153, 123777), (289, 65529), (459, 41259), (809, 23409), (867, 21843), (1377, 13753), (2427, 7803), (2601, 7281)]