28721223

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{12227}}^1$

素因数の和:12268

約数の個数: 20

約数和(自身を含む): 44387640

約数和(自身を除く): 15666417

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 12227, 36681, 110043, 330129, 354583, 990387, 1063749, 3191247, 9573741, 28721223]

約数ペア:

[(1, 28721223), (3, 9573741), (9, 3191247), (27, 1063749), (29, 990387), (81, 354583), (87, 330129), (261, 110043), (783, 36681), (2349, 12227)]