21435255

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6709}}^1$

素因数の和:6791

約数の個数: 24

約数和(自身を含む): 37683360

約数和(自身を除く): 16248105

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6709, 20127, 33545, 60381, 100635, 301905, 476339, 1429017, 2381695, 4287051, 7145085, 21435255]

約数ペア:

[(1, 21435255), (3, 7145085), (5, 4287051), (9, 2381695), (15, 1429017), (45, 476339), (71, 301905), (213, 100635), (355, 60381), (639, 33545), (1065, 20127), (3195, 6709)]