19880581

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{1301}}^1$

素因数の和:1404

約数の個数: 16

約数和(自身を含む): 23748480

約数和(自身を除く): 3867899

約数列:

[1, 7, 37, 59, 259, 413, 1301, 2183, 9107, 15281, 48137, 76759, 336959, 537313, 2840083, 19880581]

約数ペア:

[(1, 19880581), (7, 2840083), (37, 537313), (59, 336959), (259, 76759), (413, 48137), (1301, 15281), (2183, 9107)]