21390612

素因数分解:

$2^2\times 3^1\times {\mathrm{1782551}}^1$

素因数の和:1782558

約数の個数: 12

約数和(自身を含む): 49911456

約数和(自身を除く): 28520844

約数列:

[1, 2, 3, 4, 6, 12, 1782551, 3565102, 5347653, 7130204, 10695306, 21390612]

約数ペア:

[(1, 21390612), (2, 10695306), (3, 7130204), (4, 5347653), (6, 3565102), (12, 1782551)]