28119879

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{11971}}^1$

素因数の和:12012

約数の個数: 20

約数和(自身を含む): 43458360

約数和(自身を除く): 15338481

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 11971, 35913, 107739, 323217, 347159, 969651, 1041477, 3124431, 9373293, 28119879]

約数ペア:

[(1, 28119879), (3, 9373293), (9, 3124431), (27, 1041477), (29, 969651), (81, 347159), (87, 323217), (261, 107739), (783, 35913), (2349, 11971)]