81000003

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1\times {\mathrm{331}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 127148032

約数和(自身を除く): 46148029

約数列:

[1, 3, 7, 21, 43, 129, 271, 301, 331, 813, 903, 993, 1897, 2317, 5691, 6951, 11653, 14233, 34959, 42699, 81571, 89701, 99631, 244713, 269103, 298893, 627907, 1883721, 3857143, 11571429, 27000001, 81000003]

約数ペア:

[(1, 81000003), (3, 27000001), (7, 11571429), (21, 3857143), (43, 1883721), (129, 627907), (271, 298893), (301, 269103), (331, 244713), (813, 99631), (903, 89701), (993, 81571), (1897, 42699), (2317, 34959), (5691, 14233), (6951, 11653)]