513639

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 878592

約数和(自身を除く): 364953

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 263, 279, 651, 789, 1841, 1953, 2367, 5523, 8153, 16569, 24459, 57071, 73377, 171213, 513639]

約数ペア:

[(1, 513639), (3, 171213), (7, 73377), (9, 57071), (21, 24459), (31, 16569), (63, 8153), (93, 5523), (217, 2367), (263, 1953), (279, 1841), (651, 789)]