18939339

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{3203}}^1$

素因数の和:3288

約数の個数: 20

約数和(自身を含む): 28688616

約数和(自身を除く): 9749277

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 3203, 5913, 9609, 28827, 86481, 233819, 259443, 701457, 2104371, 6313113, 18939339]

約数ペア:

[(1, 18939339), (3, 6313113), (9, 2104371), (27, 701457), (73, 259443), (81, 233819), (219, 86481), (657, 28827), (1971, 9609), (3203, 5913)]