28705311

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1373}}^1$

素因数の和:1503

約数の個数: 24

約数和(自身を含む): 43726176

約数和(自身を除く): 15020865

約数列:

[1, 3, 9, 23, 69, 101, 207, 303, 909, 1373, 2323, 4119, 6969, 12357, 20907, 31579, 94737, 138673, 284211, 416019, 1248057, 3189479, 9568437, 28705311]

約数ペア:

[(1, 28705311), (3, 9568437), (9, 3189479), (23, 1248057), (69, 416019), (101, 284211), (207, 138673), (303, 94737), (909, 31579), (1373, 20907), (2323, 12357), (4119, 6969)]