84278020

素因数分解:

$2^2\times 5^1\times {\mathrm{4213901}}^1$

素因数の和:4213910

約数の個数: 12

約数和(自身を含む): 176983884

約数和(自身を除く): 92705864

約数列:

[1, 2, 4, 5, 10, 20, 4213901, 8427802, 16855604, 21069505, 42139010, 84278020]

約数ペア:

[(1, 84278020), (2, 42139010), (4, 21069505), (5, 16855604), (10, 8427802), (20, 4213901)]