21055400

素因数分解:

$2^3\times 5^2\times {\mathrm{105277}}^1$

素因数の和:105293

約数の個数: 24

約数和(自身を含む): 48954270

約数和(自身を除く): 27898870

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 105277, 210554, 421108, 526385, 842216, 1052770, 2105540, 2631925, 4211080, 5263850, 10527700, 21055400]

約数ペア:

[(1, 21055400), (2, 10527700), (4, 5263850), (5, 4211080), (8, 2631925), (10, 2105540), (20, 1052770), (25, 842216), (40, 526385), (50, 421108), (100, 210554), (200, 105277)]