20855996

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 23496004

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 197, 199, 266, 394, 398, 532, 788, 796, 1379, 1393, 2758, 2786, 3743, 3781, 5516, 5572, 7486, 7562, 14972, 15124, 26201, 26467, 39203, 52402, 52934, 78406, 104804, 105868, 156812, 274421, 548842, 744857, 1097684, 1489714, 2979428, 5213999, 10427998, 20855996]

約数ペア:

[(1, 20855996), (2, 10427998), (4, 5213999), (7, 2979428), (14, 1489714), (19, 1097684), (28, 744857), (38, 548842), (76, 274421), (133, 156812), (197, 105868), (199, 104804), (266, 78406), (394, 52934), (398, 52402), (532, 39203), (788, 26467), (796, 26201), (1379, 15124), (1393, 14972), (2758, 7562), (2786, 7486), (3743, 5572), (3781, 5516)]