128215856

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{241}}^1\times {\mathrm{811}}^1$

素因数の和:1101

約数の個数: 40

約数和(自身を含む): 255848208

約数和(自身を除く): 127632352

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 241, 328, 482, 656, 811, 964, 1622, 1928, 3244, 3856, 6488, 9881, 12976, 19762, 33251, 39524, 66502, 79048, 133004, 158096, 195451, 266008, 390902, 532016, 781804, 1563608, 3127216, 8013491, 16026982, 32053964, 64107928, 128215856]

約数ペア:

[(1, 128215856), (2, 64107928), (4, 32053964), (8, 16026982), (16, 8013491), (41, 3127216), (82, 1563608), (164, 781804), (241, 532016), (328, 390902), (482, 266008), (656, 195451), (811, 158096), (964, 133004), (1622, 79048), (1928, 66502), (3244, 39524), (3856, 33251), (6488, 19762), (9881, 12976)]