21009548

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18301}}^1$

素因数の和:18353

約数の個数: 24

約数和(自身を含む): 43046304

約数和(自身を除く): 22036756

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18301, 36602, 73204, 128107, 256214, 512428, 750341, 1500682, 3001364, 5252387, 10504774, 21009548]

約数ペア:

[(1, 21009548), (2, 10504774), (4, 5252387), (7, 3001364), (14, 1500682), (28, 750341), (41, 512428), (82, 256214), (164, 128107), (287, 73204), (574, 36602), (1148, 18301)]