20731491

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{83}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 35118720

約数和(自身を除く): 14387229

約数列:

[1, 3, 9, 11, 27, 29, 33, 83, 87, 99, 249, 261, 297, 319, 747, 783, 841, 913, 957, 2241, 2407, 2523, 2739, 2871, 7221, 7569, 8217, 8613, 9251, 21663, 22707, 24651, 26477, 27753, 64989, 69803, 79431, 83259, 209409, 238293, 249777, 628227, 714879, 767833, 1884681, 2303499, 6910497, 20731491]

約数ペア:

[(1, 20731491), (3, 6910497), (9, 2303499), (11, 1884681), (27, 767833), (29, 714879), (33, 628227), (83, 249777), (87, 238293), (99, 209409), (249, 83259), (261, 79431), (297, 69803), (319, 64989), (747, 27753), (783, 26477), (841, 24651), (913, 22707), (957, 21663), (2241, 9251), (2407, 8613), (2523, 8217), (2739, 7569), (2871, 7221)]