19912319

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1\times {\mathrm{367}}^1$

素因数の和:734

約数の個数: 16

約数和(自身を含む): 23881728

約数和(自身を除く): 3969409

約数列:

[1, 7, 23, 161, 337, 367, 2359, 2569, 7751, 8441, 54257, 59087, 123679, 865753, 2844617, 19912319]

約数ペア:

[(1, 19912319), (7, 2844617), (23, 865753), (161, 123679), (337, 59087), (367, 54257), (2359, 8441), (2569, 7751)]