21064274

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:375

約数の個数: 64

約数和(自身を含む): 43407360

約数和(自身を除く): 22343086

約数列:

[1, 2, 7, 11, 14, 19, 22, 23, 38, 46, 77, 133, 154, 161, 209, 253, 266, 313, 322, 418, 437, 506, 626, 874, 1463, 1771, 2191, 2926, 3059, 3443, 3542, 4382, 4807, 5947, 6118, 6886, 7199, 9614, 11894, 14398, 24101, 33649, 41629, 48202, 50393, 65417, 67298, 79189, 83258, 100786, 130834, 136781, 158378, 273562, 457919, 554323, 915838, 957467, 1108646, 1504591, 1914934, 3009182, 10532137, 21064274]

約数ペア:

[(1, 21064274), (2, 10532137), (7, 3009182), (11, 1914934), (14, 1504591), (19, 1108646), (22, 957467), (23, 915838), (38, 554323), (46, 457919), (77, 273562), (133, 158378), (154, 136781), (161, 130834), (209, 100786), (253, 83258), (266, 79189), (313, 67298), (322, 65417), (418, 50393), (437, 48202), (506, 41629), (626, 33649), (874, 24101), (1463, 14398), (1771, 11894), (2191, 9614), (2926, 7199), (3059, 6886), (3443, 6118), (3542, 5947), (4382, 4807)]