18987128

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{76561}}^1$

素因数の和:76598

約数の個数: 16

約数和(自身を含む): 36749760

約数和(自身を除く): 17762632

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 76561, 153122, 306244, 612488, 2373391, 4746782, 9493564, 18987128]

約数ペア:

[(1, 18987128), (2, 9493564), (4, 4746782), (8, 2373391), (31, 612488), (62, 306244), (124, 153122), (248, 76561)]