278345276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 543594240

約数和(自身を除く): 265248964

約数列:

[1, 2, 4, 11, 22, 44, 71, 139, 142, 278, 284, 556, 641, 781, 1282, 1529, 1562, 2564, 3058, 3124, 6116, 7051, 9869, 14102, 19738, 28204, 39476, 45511, 89099, 91022, 108559, 178198, 182044, 217118, 356396, 434236, 500621, 980089, 1001242, 1960178, 2002484, 3920356, 6326029, 12652058, 25304116, 69586319, 139172638, 278345276]

約数ペア:

[(1, 278345276), (2, 139172638), (4, 69586319), (11, 25304116), (22, 12652058), (44, 6326029), (71, 3920356), (139, 2002484), (142, 1960178), (278, 1001242), (284, 980089), (556, 500621), (641, 434236), (781, 356396), (1282, 217118), (1529, 182044), (1562, 178198), (2564, 108559), (3058, 91022), (3124, 89099), (6116, 45511), (7051, 39476), (9869, 28204), (14102, 19738)]