20786409

素因数分解:

$3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1009}}^1$

素因数の和:1134

約数の個数: 32

約数和(自身を含む): 35552000

約数和(自身を除く): 14765591

約数列:

[1, 3, 7, 9, 21, 27, 63, 109, 189, 327, 763, 981, 1009, 2289, 2943, 3027, 6867, 7063, 9081, 20601, 21189, 27243, 63567, 109981, 190701, 329943, 769867, 989829, 2309601, 2969487, 6928803, 20786409]

約数ペア:

[(1, 20786409), (3, 6928803), (7, 2969487), (9, 2309601), (21, 989829), (27, 769867), (63, 329943), (109, 190701), (189, 109981), (327, 63567), (763, 27243), (981, 21189), (1009, 20601), (2289, 9081), (2943, 7063), (3027, 6867)]