20398654

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1\times {\mathrm{1117}}^1$

素因数の和:1539

約数の個数: 16

約数和(自身を含む): 32037408

約数和(自身を除く): 11638754

約数列:

[1, 2, 23, 46, 397, 794, 1117, 2234, 9131, 18262, 25691, 51382, 443449, 886898, 10199327, 20398654]

約数ペア:

[(1, 20398654), (2, 10199327), (23, 886898), (46, 443449), (397, 51382), (794, 25691), (1117, 18262), (2234, 9131)]