21258660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2549}}^1$

素因数の和:2700

約数の個数: 48

約数和(自身を含む): 59976000

約数和(自身を除く): 38717340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2549, 2780, 4170, 5098, 7647, 8340, 10196, 12745, 15294, 25490, 30588, 38235, 50980, 76470, 152940, 354311, 708622, 1062933, 1417244, 1771555, 2125866, 3543110, 4251732, 5314665, 7086220, 10629330, 21258660]

約数ペア:

[(1, 21258660), (2, 10629330), (3, 7086220), (4, 5314665), (5, 4251732), (6, 3543110), (10, 2125866), (12, 1771555), (15, 1417244), (20, 1062933), (30, 708622), (60, 354311), (139, 152940), (278, 76470), (417, 50980), (556, 38235), (695, 30588), (834, 25490), (1390, 15294), (1668, 12745), (2085, 10196), (2549, 8340), (2780, 7647), (4170, 5098)]