21297903

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{17443}}^1$

素因数の和:17494

約数の個数: 16

約数和(自身を含む): 31817856

約数和(自身を除く): 10519953

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 17443, 52329, 191873, 575619, 645391, 1936173, 7099301, 21297903]

約数ペア:

[(1, 21297903), (3, 7099301), (11, 1936173), (33, 645391), (37, 575619), (111, 191873), (407, 52329), (1221, 17443)]