25639804

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{90281}}^1$

素因数の和:90356

約数の個数: 12

約数和(自身を含む): 45502128

約数和(自身を除く): 19862324

約数列:

[1, 2, 4, 71, 142, 284, 90281, 180562, 361124, 6409951, 12819902, 25639804]

約数ペア:

[(1, 25639804), (2, 12819902), (4, 6409951), (71, 361124), (142, 180562), (284, 90281)]