20646644

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{127}}^1\times {\mathrm{419}}^1$

素因数の和:647

約数の個数: 24

約数和(自身を含む): 36879360

約数和(自身を除く): 16232716

約数列:

[1, 2, 4, 97, 127, 194, 254, 388, 419, 508, 838, 1676, 12319, 24638, 40643, 49276, 53213, 81286, 106426, 162572, 212852, 5161661, 10323322, 20646644]

約数ペア:

[(1, 20646644), (2, 10323322), (4, 5161661), (97, 212852), (127, 162572), (194, 106426), (254, 81286), (388, 53213), (419, 49276), (508, 40643), (838, 24638), (1676, 12319)]