18320709

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{12911}}^1$

素因数の和:12968

約数の個数: 16

約数和(自身を含む): 27270144

約数和(自身を除く): 8949435

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 12911, 38733, 142021, 426063, 555173, 1665519, 6106903, 18320709]

約数ペア:

[(1, 18320709), (3, 6106903), (11, 1665519), (33, 555173), (43, 426063), (129, 142021), (473, 38733), (1419, 12911)]