21389115

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129631}}^1$

素因数の和:129650

約数の個数: 16

約数和(自身を含む): 37334016

約数和(自身を除く): 15944901

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129631, 388893, 648155, 1425941, 1944465, 4277823, 7129705, 21389115]

約数ペア:

[(1, 21389115), (3, 7129705), (5, 4277823), (11, 1944465), (15, 1425941), (33, 648155), (55, 388893), (165, 129631)]