20989144

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21683}}^1$

素因数の和:21711

約数の個数: 24

約数和(自身を含む): 43259580

約数和(自身を除く): 22270436

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21683, 43366, 86732, 173464, 238513, 477026, 954052, 1908104, 2623643, 5247286, 10494572, 20989144]

約数ペア:

[(1, 20989144), (2, 10494572), (4, 5247286), (8, 2623643), (11, 1908104), (22, 954052), (44, 477026), (88, 238513), (121, 173464), (242, 86732), (484, 43366), (968, 21683)]