18747905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4801}}^1$

素因数の和:4888

約数の個数: 16

約数和(自身を含む): 24893568

約数和(自身を除く): 6145663

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 4801, 24005, 52811, 264055, 340871, 1704355, 3749581, 18747905]

約数ペア:

[(1, 18747905), (5, 3749581), (11, 1704355), (55, 340871), (71, 264055), (355, 52811), (781, 24005), (3905, 4801)]