21047560

素因数分解:

$2^3\times 5^1\times {\mathrm{526189}}^1$

素因数の和:526200

約数の個数: 16

約数和(自身を含む): 47357100

約数和(自身を除く): 26309540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526189, 1052378, 2104756, 2630945, 4209512, 5261890, 10523780, 21047560]

約数ペア:

[(1, 21047560), (2, 10523780), (4, 5261890), (5, 4209512), (8, 2630945), (10, 2104756), (20, 1052378), (40, 526189)]