21118449

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{5039}}^1$

素因数の和:5180

約数の個数: 16

約数和(自身を含む): 30965760

約数和(自身を除く): 9847311

約数列:

[1, 3, 11, 33, 127, 381, 1397, 4191, 5039, 15117, 55429, 166287, 639953, 1919859, 7039483, 21118449]

約数ペア:

[(1, 21118449), (3, 7039483), (11, 1919859), (33, 639953), (127, 166287), (381, 55429), (1397, 15117), (4191, 5039)]