20904292

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{641}}^1$

素因数の和:939

約数の個数: 24

約数和(自身を含む): 37965312

約数和(自身を除く): 17061020

約数列:

[1, 2, 4, 31, 62, 124, 263, 526, 641, 1052, 1282, 2564, 8153, 16306, 19871, 32612, 39742, 79484, 168583, 337166, 674332, 5226073, 10452146, 20904292]

約数ペア:

[(1, 20904292), (2, 10452146), (4, 5226073), (31, 674332), (62, 337166), (124, 168583), (263, 79484), (526, 39742), (641, 32612), (1052, 19871), (1282, 16306), (2564, 8153)]