20381151

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{42197}}^1$

素因数の和:42230

約数の個数: 16

約数和(自身を含む): 32408064

約数和(自身を除く): 12026913

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 42197, 126591, 295379, 886137, 970531, 2911593, 6793717, 20381151]

約数ペア:

[(1, 20381151), (3, 6793717), (7, 2911593), (21, 970531), (23, 886137), (69, 295379), (161, 126591), (483, 42197)]