28782621

素因数分解:

$3^5\times 7^1\times {\mathrm{16921}}^1$

素因数の和:16943

約数の個数: 24

約数和(自身を含む): 49276864

約数和(自身を除く): 20494243

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 16921, 50763, 118447, 152289, 355341, 456867, 1066023, 1370601, 3198069, 4111803, 9594207, 28782621]

約数ペア:

[(1, 28782621), (3, 9594207), (7, 4111803), (9, 3198069), (21, 1370601), (27, 1066023), (63, 456867), (81, 355341), (189, 152289), (243, 118447), (567, 50763), (1701, 16921)]