20620780

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21937}}^1$

素因数の和:21993

約数の個数: 24

約数和(自身を含む): 44227008

約数和(自身を除く): 23606228

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21937, 43874, 87748, 109685, 219370, 438740, 1031039, 2062078, 4124156, 5155195, 10310390, 20620780]

約数ペア:

[(1, 20620780), (2, 10310390), (4, 5155195), (5, 4124156), (10, 2062078), (20, 1031039), (47, 438740), (94, 219370), (188, 109685), (235, 87748), (470, 43874), (940, 21937)]