20989179

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{463}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 32962560

約数和(自身を除く): 11973381

約数列:

[1, 3, 9, 23, 27, 69, 73, 207, 219, 463, 621, 657, 1389, 1679, 1971, 4167, 5037, 10649, 12501, 15111, 31947, 33799, 45333, 95841, 101397, 287523, 304191, 777377, 912573, 2332131, 6996393, 20989179]

約数ペア:

[(1, 20989179), (3, 6996393), (9, 2332131), (23, 912573), (27, 777377), (69, 304191), (73, 287523), (207, 101397), (219, 95841), (463, 45333), (621, 33799), (657, 31947), (1389, 15111), (1679, 12501), (1971, 10649), (4167, 5037)]