19933209

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 40

約数和(自身を含む): 31305120

約数和(自身を除く): 11371911

約数列:

[1, 3, 9, 27, 43, 59, 81, 97, 129, 177, 291, 387, 531, 873, 1161, 1593, 2537, 2619, 3483, 4171, 4779, 5723, 7611, 7857, 12513, 17169, 22833, 37539, 51507, 68499, 112617, 154521, 205497, 246089, 337851, 463563, 738267, 2214801, 6644403, 19933209]

約数ペア:

[(1, 19933209), (3, 6644403), (9, 2214801), (27, 738267), (43, 463563), (59, 337851), (81, 246089), (97, 205497), (129, 154521), (177, 112617), (291, 68499), (387, 51507), (531, 37539), (873, 22833), (1161, 17169), (1593, 12513), (2537, 7857), (2619, 7611), (3483, 5723), (4171, 4779)]