199388740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{243157}}^1$

素因数の和:243207

約数の個数: 24

約数和(自身を含む): 428930712

約数和(自身を除く): 229541972

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 243157, 486314, 972628, 1215785, 2431570, 4863140, 9969437, 19938874, 39877748, 49847185, 99694370, 199388740]

約数ペア:

[(1, 199388740), (2, 99694370), (4, 49847185), (5, 39877748), (10, 19938874), (20, 9969437), (41, 4863140), (82, 2431570), (164, 1215785), (205, 972628), (410, 486314), (820, 243157)]