19915581

素因数分解:

$3^1\times 7^1\times {\mathrm{719}}^1\times {\mathrm{1319}}^1$

素因数の和:2048

約数の個数: 16

約数和(自身を含む): 30412800

約数和(自身を除く): 10497219

約数列:

[1, 3, 7, 21, 719, 1319, 2157, 3957, 5033, 9233, 15099, 27699, 948361, 2845083, 6638527, 19915581]

約数ペア:

[(1, 19915581), (3, 6638527), (7, 2845083), (21, 948361), (719, 27699), (1319, 15099), (2157, 9233), (3957, 5033)]