20887810

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20681}}^1$

素因数の和:20789

約数の個数: 16

約数和(自身を含む): 37972152

約数和(自身を除く): 17084342

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 20681, 41362, 103405, 206810, 2088781, 4177562, 10443905, 20887810]

約数ペア:

[(1, 20887810), (2, 10443905), (5, 4177562), (10, 2088781), (101, 206810), (202, 103405), (505, 41362), (1010, 20681)]