21302239

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1103}}^1$

素因数の和:1230

約数の個数: 16

約数和(自身を含む): 25436160

約数和(自身を除く): 4133921

約数列:

[1, 7, 31, 89, 217, 623, 1103, 2759, 7721, 19313, 34193, 98167, 239351, 687169, 3043177, 21302239]

約数ペア:

[(1, 21302239), (7, 3043177), (31, 687169), (89, 239351), (217, 98167), (623, 34193), (1103, 19313), (2759, 7721)]