21000273849

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{966997}}^1$

素因数の和:967149

約数の個数: 24

約数和(自身を含む): 32181693440

約数和(自身を除く): 11181419591

約数列:

[1, 3, 9, 19, 57, 127, 171, 381, 1143, 2413, 7239, 21717, 966997, 2900991, 8702973, 18372943, 55118829, 122808619, 165356487, 368425857, 1105277571, 2333363761, 7000091283, 21000273849]

約数ペア:

[(1, 21000273849), (3, 7000091283), (9, 2333363761), (19, 1105277571), (57, 368425857), (127, 165356487), (171, 122808619), (381, 55118829), (1143, 18372943), (2413, 8702973), (7239, 2900991), (21717, 966997)]