20785439385

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27170509}}^1$

素因数の和:27170537

約数の個数: 24

約数和(自身を含む): 38147396040

約数和(自身を除く): 17361956655

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27170509, 81511527, 135852545, 244534581, 407557635, 461898653, 1222672905, 1385695959, 2309493265, 4157087877, 6928479795, 20785439385]

約数ペア:

[(1, 20785439385), (3, 6928479795), (5, 4157087877), (9, 2309493265), (15, 1385695959), (17, 1222672905), (45, 461898653), (51, 407557635), (85, 244534581), (153, 135852545), (255, 81511527), (765, 27170509)]