20518376

素因数分解:

$2^3\times {\mathrm{503}}^1\times {\mathrm{5099}}^1$

素因数の和:5608

約数の個数: 16

約数和(自身を含む): 38556000

約数和(自身を除く): 18037624

約数列:

[1, 2, 4, 8, 503, 1006, 2012, 4024, 5099, 10198, 20396, 40792, 2564797, 5129594, 10259188, 20518376]

約数ペア:

[(1, 20518376), (2, 10259188), (4, 5129594), (8, 2564797), (503, 40792), (1006, 20396), (2012, 10198), (4024, 5099)]