21177550

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4759}}^1$

素因数の和:4860

約数の個数: 24

約数和(自身を含む): 39841200

約数和(自身を除く): 18663650

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4759, 9518, 23795, 47590, 118975, 237950, 423551, 847102, 2117755, 4235510, 10588775, 21177550]

約数ペア:

[(1, 21177550), (2, 10588775), (5, 4235510), (10, 2117755), (25, 847102), (50, 423551), (89, 237950), (178, 118975), (445, 47590), (890, 23795), (2225, 9518), (4450, 4759)]