640813004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{286589}}^1$

素因数の和:286649

約数の個数: 24

約数和(自身を含む): 1235776080

約数和(自身を除く): 594963076

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 286589, 573178, 1146356, 3725657, 7451314, 12323327, 14902628, 24646654, 49293308, 160203251, 320406502, 640813004]

約数ペア:

[(1, 640813004), (2, 320406502), (4, 160203251), (13, 49293308), (26, 24646654), (43, 14902628), (52, 12323327), (86, 7451314), (172, 3725657), (559, 1146356), (1118, 573178), (2236, 286589)]