668839689

素因数分解:

$3^2\times 7^1\times {\mathrm{887}}^1\times {\mathrm{11969}}^1$

素因数の和:12869

約数の個数: 24

約数和(自身を含む): 1105453440

約数和(自身を除く): 436613751

約数列:

[1, 3, 7, 9, 21, 63, 887, 2661, 6209, 7983, 11969, 18627, 35907, 55881, 83783, 107721, 251349, 754047, 10616503, 31849509, 74315521, 95548527, 222946563, 668839689]

約数ペア:

[(1, 668839689), (3, 222946563), (7, 95548527), (9, 74315521), (21, 31849509), (63, 10616503), (887, 754047), (2661, 251349), (6209, 107721), (7983, 83783), (11969, 55881), (18627, 35907)]