278489718

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{396709}}^1$

素因数の和:396733

約数の個数: 32

約数和(自身を含む): 666472800

約数和(自身を除く): 387983082

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 234, 351, 702, 396709, 793418, 1190127, 2380254, 3570381, 5157217, 7140762, 10314434, 10711143, 15471651, 21422286, 30943302, 46414953, 92829906, 139244859, 278489718]

約数ペア:

[(1, 278489718), (2, 139244859), (3, 92829906), (6, 46414953), (9, 30943302), (13, 21422286), (18, 15471651), (26, 10711143), (27, 10314434), (39, 7140762), (54, 5157217), (78, 3570381), (117, 2380254), (234, 1190127), (351, 793418), (702, 396709)]