21258104

素因数分解:

$2^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2731}}^1$

素因数の和:2883

約数の個数: 32

約数和(自身を含む): 45897600

約数和(自身を除く): 24639496

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 2731, 3892, 5462, 7784, 10924, 19117, 21848, 38234, 76468, 152936, 379609, 759218, 1518436, 2657263, 3036872, 5314526, 10629052, 21258104]

約数ペア:

[(1, 21258104), (2, 10629052), (4, 5314526), (7, 3036872), (8, 2657263), (14, 1518436), (28, 759218), (56, 379609), (139, 152936), (278, 76468), (556, 38234), (973, 21848), (1112, 19117), (1946, 10924), (2731, 7784), (3892, 5462)]