21616168

素因数分解:

$2^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2777}}^1$

素因数の和:2929

約数の個数: 32

約数和(自身を含む): 46670400

約数和(自身を除く): 25054232

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 2777, 3892, 5554, 7784, 11108, 19439, 22216, 38878, 77756, 155512, 386003, 772006, 1544012, 2702021, 3088024, 5404042, 10808084, 21616168]

約数ペア:

[(1, 21616168), (2, 10808084), (4, 5404042), (7, 3088024), (8, 2702021), (14, 1544012), (28, 772006), (56, 386003), (139, 155512), (278, 77756), (556, 38878), (973, 22216), (1112, 19439), (1946, 11108), (2777, 7784), (3892, 5554)]