21870518

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{929}}^1$

素因数の和:1159

約数の個数: 16

約数和(自身を含む): 33480000

約数和(自身を除く): 11609482

約数列:

[1, 2, 79, 149, 158, 298, 929, 1858, 11771, 23542, 73391, 138421, 146782, 276842, 10935259, 21870518]

約数ペア:

[(1, 21870518), (2, 10935259), (79, 276842), (149, 146782), (158, 138421), (298, 73391), (929, 23542), (1858, 11771)]