84821780

素因数分解:

$2^2\times 5^1\times {\mathrm{4241089}}^1$

素因数の和:4241098

約数の個数: 12

約数和(自身を含む): 178125780

約数和(自身を除く): 93304000

約数列:

[1, 2, 4, 5, 10, 20, 4241089, 8482178, 16964356, 21205445, 42410890, 84821780]

約数ペア:

[(1, 84821780), (2, 42410890), (4, 21205445), (5, 16964356), (10, 8482178), (20, 4241089)]