28686879

素因数分解:

$3^7\times {\mathrm{13}}^1\times {\mathrm{1009}}^1$

素因数の和:1043

約数の個数: 32

約数和(自身を含む): 46379200

約数和(自身を除く): 17692321

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 729, 1009, 1053, 2187, 3027, 3159, 9081, 9477, 13117, 27243, 28431, 39351, 81729, 118053, 245187, 354159, 735561, 1062477, 2206683, 3187431, 9562293, 28686879]

約数ペア:

[(1, 28686879), (3, 9562293), (9, 3187431), (13, 2206683), (27, 1062477), (39, 735561), (81, 354159), (117, 245187), (243, 118053), (351, 81729), (729, 39351), (1009, 28431), (1053, 27243), (2187, 13117), (3027, 9477), (3159, 9081)]