21951850

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4933}}^1$

素因数の和:5034

約数の個数: 24

約数和(自身を含む): 41297580

約数和(自身を除く): 19345730

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4933, 9866, 24665, 49330, 123325, 246650, 439037, 878074, 2195185, 4390370, 10975925, 21951850]

約数ペア:

[(1, 21951850), (2, 10975925), (5, 4390370), (10, 2195185), (25, 878074), (50, 439037), (89, 246650), (178, 123325), (445, 49330), (890, 24665), (2225, 9866), (4450, 4933)]