31680981

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1153}}^1$

素因数の和:1273

約数の個数: 24

約数和(自身を含む): 47526336

約数和(自身を除く): 15845355

約数列:

[1, 3, 9, 43, 71, 129, 213, 387, 639, 1153, 3053, 3459, 9159, 10377, 27477, 49579, 81863, 148737, 245589, 446211, 736767, 3520109, 10560327, 31680981]

約数ペア:

[(1, 31680981), (3, 10560327), (9, 3520109), (43, 736767), (71, 446211), (129, 245589), (213, 148737), (387, 81863), (639, 49579), (1153, 27477), (3053, 10377), (3459, 9159)]