20654541

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{2647}}^1$

素因数の和:2690

約数の個数: 24

約数和(自身を含む): 32517440

約数和(自身を除く): 11862899

約数列:

[1, 3, 9, 17, 27, 51, 153, 289, 459, 867, 2601, 2647, 7803, 7941, 23823, 44999, 71469, 134997, 404991, 764983, 1214973, 2294949, 6884847, 20654541]

約数ペア:

[(1, 20654541), (3, 6884847), (9, 2294949), (17, 1214973), (27, 764983), (51, 404991), (153, 134997), (289, 71469), (459, 44999), (867, 23823), (2601, 7941), (2647, 7803)]