20664423

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{521}}^1$

素因数の和:656

約数の個数: 32

約数和(自身を含む): 33324480

約数和(自身を除く): 12660057

約数列:

[1, 3, 9, 13, 27, 39, 113, 117, 339, 351, 521, 1017, 1469, 1563, 3051, 4407, 4689, 6773, 13221, 14067, 20319, 39663, 58873, 60957, 176619, 182871, 529857, 765349, 1589571, 2296047, 6888141, 20664423]

約数ペア:

[(1, 20664423), (3, 6888141), (9, 2296047), (13, 1589571), (27, 765349), (39, 529857), (113, 182871), (117, 176619), (339, 60957), (351, 58873), (521, 39663), (1017, 20319), (1469, 14067), (1563, 13221), (3051, 6773), (4407, 4689)]