21711580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{98689}}^1$

素因数の和:98709

約数の個数: 24

約数和(自身を含む): 49739760

約数和(自身を除く): 28028180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 98689, 197378, 394756, 493445, 986890, 1085579, 1973780, 2171158, 4342316, 5427895, 10855790, 21711580]

約数ペア:

[(1, 21711580), (2, 10855790), (4, 5427895), (5, 4342316), (10, 2171158), (11, 1973780), (20, 1085579), (22, 986890), (44, 493445), (55, 394756), (110, 197378), (220, 98689)]