20687988

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{40093}}^1$

素因数の和:40143

約数の個数: 24

約数和(自身を含む): 49395808

約数和(自身を除く): 28707820

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516, 40093, 80186, 120279, 160372, 240558, 481116, 1723999, 3447998, 5171997, 6895996, 10343994, 20687988]

約数ペア:

[(1, 20687988), (2, 10343994), (3, 6895996), (4, 5171997), (6, 3447998), (12, 1723999), (43, 481116), (86, 240558), (129, 160372), (172, 120279), (258, 80186), (516, 40093)]