19780497

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{66601}}^1$

素因数の和:66621

約数の個数: 16

約数和(自身を含む): 31968960

約数和(自身を除く): 12188463

約数列:

[1, 3, 9, 11, 27, 33, 99, 297, 66601, 199803, 599409, 732611, 1798227, 2197833, 6593499, 19780497]

約数ペア:

[(1, 19780497), (3, 6593499), (9, 2197833), (11, 1798227), (27, 732611), (33, 599409), (99, 199803), (297, 66601)]