21913089

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{28871}}^1$

素因数の和:28908

約数の個数: 16

約数和(自身を含む): 33260544

約数和(自身を除く): 11347455

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 28871, 86613, 317581, 664033, 952743, 1992099, 7304363, 21913089]

約数ペア:

[(1, 21913089), (3, 7304363), (11, 1992099), (23, 952743), (33, 664033), (69, 317581), (253, 86613), (759, 28871)]