289856

素因数分解:

$2^6\times 7^1\times {\mathrm{647}}^1$

素因数の和:666

約数の個数: 28

約数和(自身を含む): 658368

約数和(自身を除く): 368512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 224, 448, 647, 1294, 2588, 4529, 5176, 9058, 10352, 18116, 20704, 36232, 41408, 72464, 144928, 289856]

約数ペア:

[(1, 289856), (2, 144928), (4, 72464), (7, 41408), (8, 36232), (14, 20704), (16, 18116), (28, 10352), (32, 9058), (56, 5176), (64, 4529), (112, 2588), (224, 1294), (448, 647)]