20445999

素因数分解:

$3^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{1409}}^1$

素因数の和:2110

約数の個数: 16

約数和(自身を含む): 31223040

約数和(自身を除く): 10777041

約数列:

[1, 3, 7, 21, 691, 1409, 2073, 4227, 4837, 9863, 14511, 29589, 973619, 2920857, 6815333, 20445999]

約数ペア:

[(1, 20445999), (3, 6815333), (7, 2920857), (21, 973619), (691, 29589), (1409, 14511), (2073, 9863), (4227, 4837)]