20965287

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1123}}^1$

素因数の和:1267

約数の個数: 24

約数和(自身を含む): 32802816

約数和(自身を除く): 11837529

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 1123, 2667, 3369, 6223, 7861, 18669, 23583, 55027, 142621, 165081, 427863, 998347, 2995041, 6988429, 20965287]

約数ペア:

[(1, 20965287), (3, 6988429), (7, 2995041), (21, 998347), (49, 427863), (127, 165081), (147, 142621), (381, 55027), (889, 23583), (1123, 18669), (2667, 7861), (3369, 6223)]