19961440

素因数分解:

$2^5\times 5^1\times {\mathrm{124759}}^1$

素因数の和:124774

約数の個数: 24

約数和(自身を含む): 47159280

約数和(自身を除く): 27197840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124759, 249518, 499036, 623795, 998072, 1247590, 1996144, 2495180, 3992288, 4990360, 9980720, 19961440]

約数ペア:

[(1, 19961440), (2, 9980720), (4, 4990360), (5, 3992288), (8, 2495180), (10, 1996144), (16, 1247590), (20, 998072), (32, 623795), (40, 499036), (80, 249518), (160, 124759)]