21487256

素因数分解:

$2^3\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1493}}^1$

素因数の和:1763

約数の個数: 32

約数和(自身を含む): 46254240

約数和(自身を除く): 24766984

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 257, 514, 1028, 1493, 1799, 2056, 2986, 3598, 5972, 7196, 10451, 11944, 14392, 20902, 41804, 83608, 383701, 767402, 1534804, 2685907, 3069608, 5371814, 10743628, 21487256]

約数ペア:

[(1, 21487256), (2, 10743628), (4, 5371814), (7, 3069608), (8, 2685907), (14, 1534804), (28, 767402), (56, 383701), (257, 83608), (514, 41804), (1028, 20902), (1493, 14392), (1799, 11944), (2056, 10451), (2986, 7196), (3598, 5972)]