20678313

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{1021}}^1$

素因数の和:1224

約数の個数: 16

約数和(自身を含む): 28419776

約数和(自身を除く): 7741463

約数列:

[1, 3, 43, 129, 157, 471, 1021, 3063, 6751, 20253, 43903, 131709, 160297, 480891, 6892771, 20678313]

約数ペア:

[(1, 20678313), (3, 6892771), (43, 480891), (129, 160297), (157, 131709), (471, 43903), (1021, 20253), (3063, 6751)]