21812656

素因数分解:

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

素因数の和:901

約数の個数: 30

約数和(自身を含む): 43371356

約数和(自身を除く): 21558700

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 811, 1622, 1681, 3244, 3362, 6488, 6724, 12976, 13448, 26896, 33251, 66502, 133004, 266008, 532016, 1363291, 2726582, 5453164, 10906328, 21812656]

約数ペア:

[(1, 21812656), (2, 10906328), (4, 5453164), (8, 2726582), (16, 1363291), (41, 532016), (82, 266008), (164, 133004), (328, 66502), (656, 33251), (811, 26896), (1622, 13448), (1681, 12976), (3244, 6724), (3362, 6488)]