21186361

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1097}}^1$

素因数の和:1224

約数の個数: 16

約数和(自身を含む): 25297920

約数和(自身を除く): 4111559

約数列:

[1, 7, 31, 89, 217, 623, 1097, 2759, 7679, 19313, 34007, 97633, 238049, 683431, 3026623, 21186361]

約数ペア:

[(1, 21186361), (7, 3026623), (31, 683431), (89, 238049), (217, 97633), (623, 34007), (1097, 19313), (2759, 7679)]