19915673456

素因数分解:

$2^4\times 7^1\times {\mathrm{389}}^1\times {\mathrm{457117}}^1$

素因数の和:457521

約数の個数: 40

約数和(自身を含む): 44212452960

約数和(自身を除く): 24296779504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 389, 778, 1556, 2723, 3112, 5446, 6224, 10892, 21784, 43568, 457117, 914234, 1828468, 3199819, 3656936, 6399638, 7313872, 12799276, 25598552, 51197104, 177818513, 355637026, 711274052, 1244729591, 1422548104, 2489459182, 2845096208, 4978918364, 9957836728, 19915673456]

約数ペア:

[(1, 19915673456), (2, 9957836728), (4, 4978918364), (7, 2845096208), (8, 2489459182), (14, 1422548104), (16, 1244729591), (28, 711274052), (56, 355637026), (112, 177818513), (389, 51197104), (778, 25598552), (1556, 12799276), (2723, 7313872), (3112, 6399638), (5446, 3656936), (6224, 3199819), (10892, 1828468), (21784, 914234), (43568, 457117)]