638671131

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1\times {\mathrm{839}}^1$

素因数の和:1176

約数の個数: 48

約数和(自身を含む): 1083962880

約数和(自身を除く): 445291749

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 281, 301, 387, 839, 843, 903, 1967, 2517, 2529, 2709, 5873, 5901, 7551, 12083, 17619, 17703, 36077, 36249, 52857, 84581, 108231, 108747, 235759, 252539, 253743, 324693, 707277, 757617, 761229, 1650313, 2121831, 2272851, 4950939, 10137637, 14852817, 30412911, 70963459, 91238733, 212890377, 638671131]

約数ペア:

[(1, 638671131), (3, 212890377), (7, 91238733), (9, 70963459), (21, 30412911), (43, 14852817), (63, 10137637), (129, 4950939), (281, 2272851), (301, 2121831), (387, 1650313), (839, 761229), (843, 757617), (903, 707277), (1967, 324693), (2517, 253743), (2529, 252539), (2709, 235759), (5873, 108747), (5901, 108231), (7551, 84581), (12083, 52857), (17619, 36249), (17703, 36077)]