20993231

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1087}}^1$

素因数の和:1214

約数の個数: 16

約数和(自身を含む): 25067520

約数和(自身を除く): 4074289

約数列:

[1, 7, 31, 89, 217, 623, 1087, 2759, 7609, 19313, 33697, 96743, 235879, 677201, 2999033, 20993231]

約数ペア:

[(1, 20993231), (7, 2999033), (31, 677201), (89, 235879), (217, 96743), (623, 33697), (1087, 19313), (2759, 7609)]