20805547

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{18461}}^1$

素因数の和:18498

約数の個数: 12

約数和(自身を含む): 25256016

約数和(自身を除く): 4450469

約数列:

[1, 7, 23, 49, 161, 1127, 18461, 129227, 424603, 904589, 2972221, 20805547]

約数ペア:

[(1, 20805547), (7, 2972221), (23, 904589), (49, 424603), (161, 129227), (1127, 18461)]