20716857

素因数分解:

$3^3\times 7^3\times {\mathrm{2237}}^1$

素因数の和:2267

約数の個数: 32

約数和(自身を含む): 35808000

約数和(自身を除く): 15091143

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 2237, 3087, 6711, 9261, 15659, 20133, 46977, 60399, 109613, 140931, 328839, 422793, 767291, 986517, 2301873, 2959551, 6905619, 20716857]

約数ペア:

[(1, 20716857), (3, 6905619), (7, 2959551), (9, 2301873), (21, 986517), (27, 767291), (49, 422793), (63, 328839), (147, 140931), (189, 109613), (343, 60399), (441, 46977), (1029, 20133), (1323, 15659), (2237, 9261), (3087, 6711)]