128740808

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{120997}}^1$

素因数の和:121029

約数の個数: 32

約数和(自身を含む): 290395200

約数和(自身を除く): 161654392

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 120997, 241994, 483988, 846979, 967976, 1693958, 2298943, 3387916, 4597886, 6775832, 9195772, 16092601, 18391544, 32185202, 64370404, 128740808]

約数ペア:

[(1, 128740808), (2, 64370404), (4, 32185202), (7, 18391544), (8, 16092601), (14, 9195772), (19, 6775832), (28, 4597886), (38, 3387916), (56, 2298943), (76, 1693958), (133, 967976), (152, 846979), (266, 483988), (532, 241994), (1064, 120997)]