21420456

素因数分解:

$2^3\times 3^1\times {\mathrm{139}}^1\times {\mathrm{6421}}^1$

素因数の和:6569

約数の個数: 32

約数和(自身を含む): 53944800

約数和(自身を除く): 32524344

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 139, 278, 417, 556, 834, 1112, 1668, 3336, 6421, 12842, 19263, 25684, 38526, 51368, 77052, 154104, 892519, 1785038, 2677557, 3570076, 5355114, 7140152, 10710228, 21420456]

約数ペア:

[(1, 21420456), (2, 10710228), (3, 7140152), (4, 5355114), (6, 3570076), (8, 2677557), (12, 1785038), (24, 892519), (139, 154104), (278, 77052), (417, 51368), (556, 38526), (834, 25684), (1112, 19263), (1668, 12842), (3336, 6421)]