21879156

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1009}}^1$

素因数の和:1168

約数の個数: 48

約数和(自身を含む): 55428800

約数和(自身を除く): 33549644

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 139, 156, 278, 417, 556, 834, 1009, 1668, 1807, 2018, 3027, 3614, 4036, 5421, 6054, 7228, 10842, 12108, 13117, 21684, 26234, 39351, 52468, 78702, 140251, 157404, 280502, 420753, 561004, 841506, 1683012, 1823263, 3646526, 5469789, 7293052, 10939578, 21879156]

約数ペア:

[(1, 21879156), (2, 10939578), (3, 7293052), (4, 5469789), (6, 3646526), (12, 1823263), (13, 1683012), (26, 841506), (39, 561004), (52, 420753), (78, 280502), (139, 157404), (156, 140251), (278, 78702), (417, 52468), (556, 39351), (834, 26234), (1009, 21684), (1668, 13117), (1807, 12108), (2018, 10842), (3027, 7228), (3614, 6054), (4036, 5421)]