219877520

素因数分解:

$2^4\times 5^1\times {\mathrm{2748469}}^1$

素因数の和:2748482

約数の個数: 20

約数和(自身を含む): 511215420

約数和(自身を除く): 291337900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2748469, 5496938, 10993876, 13742345, 21987752, 27484690, 43975504, 54969380, 109938760, 219877520]

約数ペア:

[(1, 219877520), (2, 109938760), (4, 54969380), (5, 43975504), (8, 27484690), (10, 21987752), (16, 13742345), (20, 10993876), (40, 5496938), (80, 2748469)]