19728401

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1481}}^1$

素因数の和:1672

約数の個数: 16

約数和(自身を含む): 24755328

約数和(自身を除く): 5026927

約数列:

[1, 7, 11, 77, 173, 1211, 1481, 1903, 10367, 13321, 16291, 114037, 256213, 1793491, 2818343, 19728401]

約数ペア:

[(1, 19728401), (7, 2818343), (11, 1793491), (77, 256213), (173, 114037), (1211, 16291), (1481, 13321), (1903, 10367)]