12689205

素因数分解:

$3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{6661}}^1$

素因数の和:6796

約数の個数: 16

約数和(自身を含む): 20465664

約数和(自身を除く): 7776459

約数列:

[1, 3, 5, 15, 127, 381, 635, 1905, 6661, 19983, 33305, 99915, 845947, 2537841, 4229735, 12689205]

約数ペア:

[(1, 12689205), (3, 4229735), (5, 2537841), (15, 845947), (127, 99915), (381, 33305), (635, 19983), (1905, 6661)]