390757899

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{61819}}^1$

素因数の和:61879

約数の個数: 24

約数和(自身を含む): 620178240

約数和(自身を除く): 229420341

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 6321, 61819, 185457, 432733, 1298199, 2658217, 3029131, 7974651, 9087393, 18607519, 55822557, 130252633, 390757899]

約数ペア:

[(1, 390757899), (3, 130252633), (7, 55822557), (21, 18607519), (43, 9087393), (49, 7974651), (129, 3029131), (147, 2658217), (301, 1298199), (903, 432733), (2107, 185457), (6321, 61819)]