20320025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3889}}^1$

素因数の和:3929

約数の個数: 24

約数和(自身を含む): 28941600

約数和(自身を除く): 8621575

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 3889, 5225, 19445, 42779, 73891, 97225, 213895, 369455, 812801, 1069475, 1847275, 4064005, 20320025]

約数ペア:

[(1, 20320025), (5, 4064005), (11, 1847275), (19, 1069475), (25, 812801), (55, 369455), (95, 213895), (209, 97225), (275, 73891), (475, 42779), (1045, 19445), (3889, 5225)]