201997789

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{317}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 248497920

約数和(自身を除く): 46500131

約数列:

[1, 7, 29, 43, 73, 203, 301, 317, 511, 1247, 2117, 2219, 3139, 8729, 9193, 13631, 14819, 21973, 23141, 64351, 91031, 95417, 161987, 395299, 637217, 671089, 995063, 2767093, 4697623, 6965441, 28856827, 201997789]

約数ペア:

[(1, 201997789), (7, 28856827), (29, 6965441), (43, 4697623), (73, 2767093), (203, 995063), (301, 671089), (317, 637217), (511, 395299), (1247, 161987), (2117, 95417), (2219, 91031), (3139, 64351), (8729, 23141), (9193, 21973), (13631, 14819)]