20154743

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{709}}^1$

素因数の和:878

約数の個数: 16

約数和(自身を含む): 23992320

約数和(自身を除く): 3837577

約数列:

[1, 7, 31, 131, 217, 709, 917, 4061, 4963, 21979, 28427, 92879, 153853, 650153, 2879249, 20154743]

約数ペア:

[(1, 20154743), (7, 2879249), (31, 650153), (131, 153853), (217, 92879), (709, 28427), (917, 21979), (4061, 4963)]