21240538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{22453}}^1$

素因数の和:22509

約数の個数: 16

約数和(自身を含む): 35567136

約数和(自身を除く): 14326598

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 22453, 44906, 246983, 493966, 965479, 1930958, 10620269, 21240538]

約数ペア:

[(1, 21240538), (2, 10620269), (11, 1930958), (22, 965479), (43, 493966), (86, 246983), (473, 44906), (946, 22453)]