20683635

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 39004416

約数和(自身を除く): 18320781

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 107, 147, 245, 263, 321, 535, 735, 749, 789, 1315, 1605, 1841, 2247, 3745, 3945, 5243, 5523, 9205, 11235, 12887, 15729, 26215, 27615, 28141, 38661, 64435, 78645, 84423, 140705, 193305, 196987, 422115, 590961, 984935, 1378909, 2954805, 4136727, 6894545, 20683635]

約数ペア:

[(1, 20683635), (3, 6894545), (5, 4136727), (7, 2954805), (15, 1378909), (21, 984935), (35, 590961), (49, 422115), (105, 196987), (107, 193305), (147, 140705), (245, 84423), (263, 78645), (321, 64435), (535, 38661), (735, 28141), (749, 27615), (789, 26215), (1315, 15729), (1605, 12887), (1841, 11235), (2247, 9205), (3745, 5523), (3945, 5243)]