28081215

素因数分解:

$3^3\times 5^1\times {\mathrm{208009}}^1$

素因数の和:208023

約数の個数: 16

約数和(自身を含む): 49922400

約数和(自身を除く): 21841185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 208009, 624027, 1040045, 1872081, 3120135, 5616243, 9360405, 28081215]

約数ペア:

[(1, 28081215), (3, 9360405), (5, 5616243), (9, 3120135), (15, 1872081), (27, 1040045), (45, 624027), (135, 208009)]