18391745

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{653}}^1$

素因数の和:832

約数の個数: 16

約数和(自身を含む): 22790592

約数和(自身を除く): 4398847

約数列:

[1, 5, 43, 131, 215, 653, 655, 3265, 5633, 28079, 28165, 85543, 140395, 427715, 3678349, 18391745]

約数ペア:

[(1, 18391745), (5, 3678349), (43, 427715), (131, 140395), (215, 85543), (653, 28165), (655, 28079), (3265, 5633)]