20939564

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{449}}^1$

素因数の和:673

約数の個数: 24

約数和(自身を含む): 37422000

約数和(自身を除く): 16482436

約数列:

[1, 2, 4, 89, 131, 178, 262, 356, 449, 524, 898, 1796, 11659, 23318, 39961, 46636, 58819, 79922, 117638, 159844, 235276, 5234891, 10469782, 20939564]

約数ペア:

[(1, 20939564), (2, 10469782), (4, 5234891), (89, 235276), (131, 159844), (178, 117638), (262, 79922), (356, 58819), (449, 46636), (524, 39961), (898, 23318), (1796, 11659)]