19388313

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 34759296

約数和(自身を除く): 15370983

約数列:

[1, 3, 7, 9, 17, 21, 43, 51, 63, 119, 129, 153, 301, 357, 387, 421, 731, 903, 1071, 1263, 2193, 2709, 2947, 3789, 5117, 6579, 7157, 8841, 15351, 18103, 21471, 26523, 46053, 50099, 54309, 64413, 126721, 150297, 162927, 307751, 380163, 450891, 923253, 1140489, 2154257, 2769759, 6462771, 19388313]

約数ペア:

[(1, 19388313), (3, 6462771), (7, 2769759), (9, 2154257), (17, 1140489), (21, 923253), (43, 450891), (51, 380163), (63, 307751), (119, 162927), (129, 150297), (153, 126721), (301, 64413), (357, 54309), (387, 50099), (421, 46053), (731, 26523), (903, 21471), (1071, 18103), (1263, 15351), (2193, 8841), (2709, 7157), (2947, 6579), (3789, 5117)]