21431289

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{7297}}^1$

素因数の和:7400

約数の個数: 16

約数和(自身を含む): 31527360

約数和(自身を除く): 10096071

約数列:

[1, 3, 11, 33, 89, 267, 979, 2937, 7297, 21891, 80267, 240801, 649433, 1948299, 7143763, 21431289]

約数ペア:

[(1, 21431289), (3, 7143763), (11, 1948299), (33, 649433), (89, 240801), (267, 80267), (979, 21891), (2937, 7297)]