20780056

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21467}}^1$

素因数の和:21495

約数の個数: 24

約数和(自身を含む): 42828660

約数和(自身を除く): 22048604

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21467, 42934, 85868, 171736, 236137, 472274, 944548, 1889096, 2597507, 5195014, 10390028, 20780056]

約数ペア:

[(1, 20780056), (2, 10390028), (4, 5195014), (8, 2597507), (11, 1889096), (22, 944548), (44, 472274), (88, 236137), (121, 171736), (242, 85868), (484, 42934), (968, 21467)]