28679217

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{13259}}^1$

素因数の和:13372

約数の個数: 16

約数和(自身を含む): 44129280

約数和(自身を除く): 15450063

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 13259, 39777, 92813, 278439, 1365677, 4097031, 9559739, 28679217]

約数ペア:

[(1, 28679217), (3, 9559739), (7, 4097031), (21, 1365677), (103, 278439), (309, 92813), (721, 39777), (2163, 13259)]