20789428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{4871}}^1$

素因数の和:4983

約数の個数: 24

約数和(自身を含む): 40106304

約数和(自身を除く): 19316876

約数列:

[1, 2, 4, 11, 22, 44, 97, 194, 388, 1067, 2134, 4268, 4871, 9742, 19484, 53581, 107162, 214324, 472487, 944974, 1889948, 5197357, 10394714, 20789428]

約数ペア:

[(1, 20789428), (2, 10394714), (4, 5197357), (11, 1889948), (22, 944974), (44, 472487), (97, 214324), (194, 107162), (388, 53581), (1067, 19484), (2134, 9742), (4268, 4871)]