28870191

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{11177}}^1$

素因数の和:11231

約数の個数: 24

約数和(自身を含む): 48825504

約数和(自身を除く): 19955313

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 11177, 33531, 78239, 100593, 234717, 458257, 704151, 1374771, 3207799, 4124313, 9623397, 28870191]

約数ペア:

[(1, 28870191), (3, 9623397), (7, 4124313), (9, 3207799), (21, 1374771), (41, 704151), (63, 458257), (123, 234717), (287, 100593), (369, 78239), (861, 33531), (2583, 11177)]