20957739

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{3671}}^1$

素因数の和:3858

約数の個数: 16

約数和(自身を含む): 30668544

約数和(自身を除く): 9710805

約数列:

[1, 3, 11, 33, 173, 519, 1903, 3671, 5709, 11013, 40381, 121143, 635083, 1905249, 6985913, 20957739]

約数ペア:

[(1, 20957739), (3, 6985913), (11, 1905249), (33, 635083), (173, 121143), (519, 40381), (1903, 11013), (3671, 5709)]