278753157

素因数分解:

$3^4\times {\mathrm{353}}^1\times {\mathrm{9749}}^1$

素因数の和:10114

約数の個数: 20

約数和(自身を含む): 417631500

約数和(自身を除く): 138878343

約数列:

[1, 3, 9, 27, 81, 353, 1059, 3177, 9531, 9749, 28593, 29247, 87741, 263223, 789669, 3441397, 10324191, 30972573, 92917719, 278753157]

約数ペア:

[(1, 278753157), (3, 92917719), (9, 30972573), (27, 10324191), (81, 3441397), (353, 789669), (1059, 263223), (3177, 87741), (9531, 29247), (9749, 28593)]