20861265

素因数分解:

$3^1\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1913}}^1$

素因数の和:2648

約数の個数: 16

約数和(自身を含む): 33441408

約数和(自身を除く): 12580143

約数列:

[1, 3, 5, 15, 727, 1913, 2181, 3635, 5739, 9565, 10905, 28695, 1390751, 4172253, 6953755, 20861265]

約数ペア:

[(1, 20861265), (3, 6953755), (5, 4172253), (15, 1390751), (727, 28695), (1913, 10905), (2181, 9565), (3635, 5739)]