19983993

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{4721}}^1$

素因数の和:4824

約数の個数: 16

約数和(自身を含む): 28558656

約数和(自身を除く): 8574663

約数列:

[1, 3, 17, 51, 83, 249, 1411, 4233, 4721, 14163, 80257, 240771, 391843, 1175529, 6661331, 19983993]

約数ペア:

[(1, 19983993), (3, 6661331), (17, 1175529), (51, 391843), (83, 240771), (249, 80257), (1411, 14163), (4233, 4721)]