199911901

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{48487}}^1$

素因数の和:48544

約数の個数: 16

約数和(自身を含む): 248258560

約数和(自身を除く): 48346659

約数列:

[1, 7, 19, 31, 133, 217, 589, 4123, 48487, 339409, 921253, 1503097, 6448771, 10521679, 28558843, 199911901]

約数ペア:

[(1, 199911901), (7, 28558843), (19, 10521679), (31, 6448771), (133, 1503097), (217, 921253), (589, 339409), (4123, 48487)]