21280816

素因数分解:

$2^4\times {\mathrm{347}}^1\times {\mathrm{3833}}^1$

素因数の和:4188

約数の個数: 20

約数和(自身を含む): 41361192

約数和(自身を除く): 20080376

約数列:

[1, 2, 4, 8, 16, 347, 694, 1388, 2776, 3833, 5552, 7666, 15332, 30664, 61328, 1330051, 2660102, 5320204, 10640408, 21280816]

約数ペア:

[(1, 21280816), (2, 10640408), (4, 5320204), (8, 2660102), (16, 1330051), (347, 61328), (694, 30664), (1388, 15332), (2776, 7666), (3833, 5552)]