20161651671

素因数分解:

$3^2\times 7^2\times {\mathrm{45718031}}^1$

素因数の和:45718051

約数の個数: 18

約数和(自身を含む): 33877061712

約数和(自身を除く): 13715410041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45718031, 137154093, 320026217, 411462279, 960078651, 2240183519, 2880235953, 6720550557, 20161651671]

約数ペア:

[(1, 20161651671), (3, 6720550557), (7, 2880235953), (9, 2240183519), (21, 960078651), (49, 411462279), (63, 320026217), (147, 137154093), (441, 45718031)]