20010969

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{607}}^1$

素因数の和:667

約数の個数: 40

約数和(自身を含む): 33547008

約数和(自身を除く): 13536039

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 297, 333, 407, 607, 891, 999, 1221, 1821, 2997, 3663, 5463, 6677, 10989, 16389, 20031, 22459, 32967, 49167, 60093, 67377, 180279, 202131, 247049, 540837, 606393, 741147, 1819179, 2223441, 6670323, 20010969]

約数ペア:

[(1, 20010969), (3, 6670323), (9, 2223441), (11, 1819179), (27, 741147), (33, 606393), (37, 540837), (81, 247049), (99, 202131), (111, 180279), (297, 67377), (333, 60093), (407, 49167), (607, 32967), (891, 22459), (999, 20031), (1221, 16389), (1821, 10989), (2997, 6677), (3663, 5463)]