128128208

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{641}}^1$

素因数の和:724

約数の個数: 60

約数和(自身を含む): 276677604

約数和(自身を除く): 148549396

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 641, 806, 961, 1282, 1612, 1922, 2564, 3224, 3844, 5128, 6448, 7688, 8333, 10256, 12493, 15376, 16666, 19871, 24986, 33332, 39742, 49972, 66664, 79484, 99944, 133328, 158968, 199888, 258323, 317936, 516646, 616001, 1033292, 1232002, 2066584, 2464004, 4133168, 4928008, 8008013, 9856016, 16016026, 32032052, 64064104, 128128208]

約数ペア:

[(1, 128128208), (2, 64064104), (4, 32032052), (8, 16016026), (13, 9856016), (16, 8008013), (26, 4928008), (31, 4133168), (52, 2464004), (62, 2066584), (104, 1232002), (124, 1033292), (208, 616001), (248, 516646), (403, 317936), (496, 258323), (641, 199888), (806, 158968), (961, 133328), (1282, 99944), (1612, 79484), (1922, 66664), (2564, 49972), (3224, 39742), (3844, 33332), (5128, 24986), (6448, 19871), (7688, 16666), (8333, 15376), (10256, 12493)]