21663249

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:365

約数の個数: 24

約数和(自身を含む): 30979872

約数和(自身を除く): 9316623

約数列:

[1, 3, 19, 57, 83, 241, 249, 361, 723, 1083, 1577, 4579, 4731, 13737, 20003, 29963, 60009, 87001, 89889, 261003, 380057, 1140171, 7221083, 21663249]

約数ペア:

[(1, 21663249), (3, 7221083), (19, 1140171), (57, 380057), (83, 261003), (241, 89889), (249, 87001), (361, 60009), (723, 29963), (1083, 20003), (1577, 13737), (4579, 4731)]