18947978

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71233}}^1$

素因数の和:71261

約数の個数: 16

約数和(自身を含む): 34192320

約数和(自身を除く): 15244342

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 71233, 142466, 498631, 997262, 1353427, 2706854, 9473989, 18947978]

約数ペア:

[(1, 18947978), (2, 9473989), (7, 2706854), (14, 1353427), (19, 997262), (38, 498631), (133, 142466), (266, 71233)]