21369909

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{5099}}^1$

素因数の和:5240

約数の個数: 16

約数和(自身を含む): 31334400

約数和(自身を除く): 9964491

約数列:

[1, 3, 11, 33, 127, 381, 1397, 4191, 5099, 15297, 56089, 168267, 647573, 1942719, 7123303, 21369909]

約数ペア:

[(1, 21369909), (3, 7123303), (11, 1942719), (33, 647573), (127, 168267), (381, 56089), (1397, 15297), (4191, 5099)]