20311179

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{271}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 32169984

約数和(自身を除く): 11858805

約数列:

[1, 3, 7, 21, 43, 83, 129, 249, 271, 301, 581, 813, 903, 1743, 1897, 3569, 5691, 10707, 11653, 22493, 24983, 34959, 67479, 74949, 81571, 157451, 244713, 472353, 967199, 2901597, 6770393, 20311179]

約数ペア:

[(1, 20311179), (3, 6770393), (7, 2901597), (21, 967199), (43, 472353), (83, 244713), (129, 157451), (249, 81571), (271, 74949), (301, 67479), (581, 34959), (813, 24983), (903, 22493), (1743, 11653), (1897, 10707), (3569, 5691)]