21076780

素因数分解:

$2^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{3037}}^1$

素因数の和:3393

約数の個数: 24

約数和(自身を含む): 44403408

約数和(自身を除く): 23326628

約数列:

[1, 2, 4, 5, 10, 20, 347, 694, 1388, 1735, 3037, 3470, 6074, 6940, 12148, 15185, 30370, 60740, 1053839, 2107678, 4215356, 5269195, 10538390, 21076780]

約数ペア:

[(1, 21076780), (2, 10538390), (4, 5269195), (5, 4215356), (10, 2107678), (20, 1053839), (347, 60740), (694, 30370), (1388, 15185), (1735, 12148), (3037, 6940), (3470, 6074)]