2556009

素因数分解:

$3^3\times {\mathrm{137}}^1\times {\mathrm{691}}^1$

素因数の和:837

約数の個数: 16

約数和(自身を含む): 3819840

約数和(自身を除く): 1263831

約数列:

[1, 3, 9, 27, 137, 411, 691, 1233, 2073, 3699, 6219, 18657, 94667, 284001, 852003, 2556009]

約数ペア:

[(1, 2556009), (3, 852003), (9, 284001), (27, 94667), (137, 18657), (411, 6219), (691, 3699), (1233, 2073)]