28017819

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20347}}^1$

素因数の和:20376

約数の個数: 20

約数和(自身を含む): 44317944

約数和(自身を除く): 16300125

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20347, 61041, 183123, 345899, 549369, 1037697, 1648107, 3113091, 9339273, 28017819]

約数ペア:

[(1, 28017819), (3, 9339273), (9, 3113091), (17, 1648107), (27, 1037697), (51, 549369), (81, 345899), (153, 183123), (459, 61041), (1377, 20347)]