20481255

素因数分解:

$3^7\times 5^1\times {\mathrm{1873}}^1$

素因数の和:1899

約数の個数: 32

約数和(自身を含む): 36880320

約数和(自身を除く): 16399065

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1873, 2187, 3645, 5619, 9365, 10935, 16857, 28095, 50571, 84285, 151713, 252855, 455139, 758565, 1365417, 2275695, 4096251, 6827085, 20481255]

約数ペア:

[(1, 20481255), (3, 6827085), (5, 4096251), (9, 2275695), (15, 1365417), (27, 758565), (45, 455139), (81, 252855), (135, 151713), (243, 84285), (405, 50571), (729, 28095), (1215, 16857), (1873, 10935), (2187, 9365), (3645, 5619)]