21957328

素因数分解:

$2^4\times {\mathrm{1063}}^1\times {\mathrm{1291}}^1$

素因数の和:2362

約数の個数: 20

約数和(自身を含む): 42615328

約数和(自身を除く): 20658000

約数列:

[1, 2, 4, 8, 16, 1063, 1291, 2126, 2582, 4252, 5164, 8504, 10328, 17008, 20656, 1372333, 2744666, 5489332, 10978664, 21957328]

約数ペア:

[(1, 21957328), (2, 10978664), (4, 5489332), (8, 2744666), (16, 1372333), (1063, 20656), (1291, 17008), (2126, 10328), (2582, 8504), (4252, 5164)]