21686756

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4583}}^1$

素因数の和:4620

約数の個数: 36

約数和(自身を含む): 46976832

約数和(自身を除く): 25290076

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4583, 4732, 9166, 18332, 32081, 59579, 64162, 119158, 128324, 238316, 417053, 774527, 834106, 1549054, 1668212, 3098108, 5421689, 10843378, 21686756]

約数ペア:

[(1, 21686756), (2, 10843378), (4, 5421689), (7, 3098108), (13, 1668212), (14, 1549054), (26, 834106), (28, 774527), (52, 417053), (91, 238316), (169, 128324), (182, 119158), (338, 64162), (364, 59579), (676, 32081), (1183, 18332), (2366, 9166), (4583, 4732)]