128409868

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 239057280

約数和(自身を除く): 110647412

約数列:

[1, 2, 4, 41, 43, 82, 86, 131, 139, 164, 172, 262, 278, 524, 556, 1763, 3526, 5371, 5633, 5699, 5977, 7052, 10742, 11266, 11398, 11954, 18209, 21484, 22532, 22796, 23908, 36418, 72836, 230953, 245057, 461906, 490114, 746569, 782987, 923812, 980228, 1493138, 1565974, 2986276, 3131948, 32102467, 64204934, 128409868]

約数ペア:

[(1, 128409868), (2, 64204934), (4, 32102467), (41, 3131948), (43, 2986276), (82, 1565974), (86, 1493138), (131, 980228), (139, 923812), (164, 782987), (172, 746569), (262, 490114), (278, 461906), (524, 245057), (556, 230953), (1763, 72836), (3526, 36418), (5371, 23908), (5633, 22796), (5699, 22532), (5977, 21484), (7052, 18209), (10742, 11954), (11266, 11398)]