21081662

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:285

約数の個数: 48

約数和(自身を含む): 39398400

約数和(自身を除く): 18316738

約数列:

[1, 2, 7, 14, 23, 46, 47, 49, 94, 98, 161, 199, 322, 329, 398, 658, 1081, 1127, 1393, 2162, 2254, 2303, 2786, 4577, 4606, 7567, 9154, 9353, 9751, 15134, 18706, 19502, 32039, 52969, 64078, 65471, 105938, 130942, 215119, 224273, 430238, 448546, 458297, 916594, 1505833, 3011666, 10540831, 21081662]

約数ペア:

[(1, 21081662), (2, 10540831), (7, 3011666), (14, 1505833), (23, 916594), (46, 458297), (47, 448546), (49, 430238), (94, 224273), (98, 215119), (161, 130942), (199, 105938), (322, 65471), (329, 64078), (398, 52969), (658, 32039), (1081, 19502), (1127, 18706), (1393, 15134), (2162, 9751), (2254, 9353), (2303, 9154), (2786, 7567), (4577, 4606)]