20806918

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{127}}^1\times {\mathrm{677}}^1$

素因数の和:828

約数の個数: 24

約数和(自身を含む): 34626816

約数和(自身を除く): 13819898

約数列:

[1, 2, 11, 22, 121, 127, 242, 254, 677, 1354, 1397, 2794, 7447, 14894, 15367, 30734, 81917, 85979, 163834, 171958, 945769, 1891538, 10403459, 20806918]

約数ペア:

[(1, 20806918), (2, 10403459), (11, 1891538), (22, 945769), (121, 171958), (127, 163834), (242, 85979), (254, 81917), (677, 30734), (1354, 15367), (1397, 14894), (2794, 7447)]