18822321

素因数分解:

$3^3\times 7^2\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 33324480

約数和(自身を除く): 14502159

約数列:

[1, 3, 7, 9, 21, 27, 41, 49, 63, 123, 147, 189, 287, 347, 369, 441, 861, 1041, 1107, 1323, 2009, 2429, 2583, 3123, 6027, 7287, 7749, 9369, 14227, 17003, 18081, 21861, 42681, 51009, 54243, 65583, 99589, 128043, 153027, 298767, 384129, 459081, 697123, 896301, 2091369, 2688903, 6274107, 18822321]

約数ペア:

[(1, 18822321), (3, 6274107), (7, 2688903), (9, 2091369), (21, 896301), (27, 697123), (41, 459081), (49, 384129), (63, 298767), (123, 153027), (147, 128043), (189, 99589), (287, 65583), (347, 54243), (369, 51009), (441, 42681), (861, 21861), (1041, 18081), (1107, 17003), (1323, 14227), (2009, 9369), (2429, 7749), (2583, 7287), (3123, 6027)]