21066800

素因数分解:

$2^4\times 5^2\times {\mathrm{52667}}^1$

素因数の和:52685

約数の個数: 30

約数和(自身を含む): 50613948

約数和(自身を除く): 29547148

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52667, 105334, 210668, 263335, 421336, 526670, 842672, 1053340, 1316675, 2106680, 2633350, 4213360, 5266700, 10533400, 21066800]

約数ペア:

[(1, 21066800), (2, 10533400), (4, 5266700), (5, 4213360), (8, 2633350), (10, 2106680), (16, 1316675), (20, 1053340), (25, 842672), (40, 526670), (50, 421336), (80, 263335), (100, 210668), (200, 105334), (400, 52667)]