21256510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1117}}^1$

素因数の和:1308

約数の個数: 32

約数和(自身を含む): 42018912

約数和(自身を除く): 20762402

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 173, 346, 865, 1117, 1730, 1903, 2234, 3806, 5585, 9515, 11170, 12287, 19030, 24574, 61435, 122870, 193241, 386482, 966205, 1932410, 2125651, 4251302, 10628255, 21256510]

約数ペア:

[(1, 21256510), (2, 10628255), (5, 4251302), (10, 2125651), (11, 1932410), (22, 966205), (55, 386482), (110, 193241), (173, 122870), (346, 61435), (865, 24574), (1117, 19030), (1730, 12287), (1903, 11170), (2234, 9515), (3806, 5585)]