20208771

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{613}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 33878064

約数和(自身を除く): 13669293

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 297, 333, 407, 613, 891, 999, 1221, 1839, 2997, 3663, 5517, 6743, 10989, 16551, 20229, 22681, 32967, 49653, 60687, 68043, 182061, 204129, 249491, 546183, 612387, 748473, 1837161, 2245419, 6736257, 20208771]

約数ペア:

[(1, 20208771), (3, 6736257), (9, 2245419), (11, 1837161), (27, 748473), (33, 612387), (37, 546183), (81, 249491), (99, 204129), (111, 182061), (297, 68043), (333, 60687), (407, 49653), (613, 32967), (891, 22681), (999, 20229), (1221, 16551), (1839, 10989), (2997, 6743), (3663, 5517)]