18674721

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 31646160

約数和(自身を除く): 12971439

約数列:

[1, 3, 9, 13, 17, 39, 41, 51, 117, 123, 153, 221, 229, 369, 533, 663, 687, 697, 1599, 1989, 2061, 2091, 2977, 3893, 4797, 6273, 8931, 9061, 9389, 11679, 26793, 27183, 28167, 35037, 50609, 81549, 84501, 122057, 151827, 159613, 366171, 455481, 478839, 1098513, 1436517, 2074969, 6224907, 18674721]

約数ペア:

[(1, 18674721), (3, 6224907), (9, 2074969), (13, 1436517), (17, 1098513), (39, 478839), (41, 455481), (51, 366171), (117, 159613), (123, 151827), (153, 122057), (221, 84501), (229, 81549), (369, 50609), (533, 35037), (663, 28167), (687, 27183), (697, 26793), (1599, 11679), (1989, 9389), (2061, 9061), (2091, 8931), (2977, 6273), (3893, 4797)]