210905947

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{11923}}^1$

素因数の和:11975

約数の個数: 18

約数和(自身を含む): 258953508

約数和(自身を除く): 48047561

約数列:

[1, 7, 19, 49, 133, 361, 931, 2527, 11923, 17689, 83461, 226537, 584227, 1585759, 4304203, 11100313, 30129421, 210905947]

約数ペア:

[(1, 210905947), (7, 30129421), (19, 11100313), (49, 4304203), (133, 1585759), (361, 584227), (931, 226537), (2527, 83461), (11923, 17689)]