20996864

素因数分解:

$2^8\times 7^1\times {\mathrm{11717}}^1$

素因数の和:11740

約数の個数: 36

約数和(自身を含む): 47903184

約数和(自身を除く): 26906320

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 896, 1792, 11717, 23434, 46868, 82019, 93736, 164038, 187472, 328076, 374944, 656152, 749888, 1312304, 1499776, 2624608, 2999552, 5249216, 10498432, 20996864]

約数ペア:

[(1, 20996864), (2, 10498432), (4, 5249216), (7, 2999552), (8, 2624608), (14, 1499776), (16, 1312304), (28, 749888), (32, 656152), (56, 374944), (64, 328076), (112, 187472), (128, 164038), (224, 93736), (256, 82019), (448, 46868), (896, 23434), (1792, 11717)]