21787755

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{132047}}^1$

素因数の和:132066

約数の個数: 16

約数和(自身を含む): 38029824

約数和(自身を除く): 16242069

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 132047, 396141, 660235, 1452517, 1980705, 4357551, 7262585, 21787755]

約数ペア:

[(1, 21787755), (3, 7262585), (5, 4357551), (11, 1980705), (15, 1452517), (33, 660235), (55, 396141), (165, 132047)]