18904509

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{1381}}^1$

素因数の和:1419

約数の個数: 30

約数和(自身を含む): 30601626

約数和(自身を除く): 11697117

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 169, 351, 507, 1053, 1381, 1521, 4143, 4563, 12429, 13689, 17953, 37287, 53859, 111861, 161577, 233389, 484731, 700167, 1454193, 2100501, 6301503, 18904509]

約数ペア:

[(1, 18904509), (3, 6301503), (9, 2100501), (13, 1454193), (27, 700167), (39, 484731), (81, 233389), (117, 161577), (169, 111861), (351, 53859), (507, 37287), (1053, 17953), (1381, 13689), (1521, 12429), (4143, 4563)]