21066680

素因数分解:

$2^3\times 5^1\times {\mathrm{526667}}^1$

素因数の和:526678

約数の個数: 16

約数和(自身を含む): 47400120

約数和(自身を除く): 26333440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526667, 1053334, 2106668, 2633335, 4213336, 5266670, 10533340, 21066680]

約数ペア:

[(1, 21066680), (2, 10533340), (4, 5266670), (5, 4213336), (8, 2633335), (10, 2106668), (20, 1053334), (40, 526667)]