20789027984

素因数分解:

$2^4\times {\mathrm{691}}^1\times {\mathrm{1880339}}^1$

素因数の和:1881038

約数の個数: 20

約数和(自身を含む): 40337053680

約数和(自身を除く): 19548025696

約数列:

[1, 2, 4, 8, 16, 691, 1382, 2764, 5528, 11056, 1880339, 3760678, 7521356, 15042712, 30085424, 1299314249, 2598628498, 5197256996, 10394513992, 20789027984]

約数ペア:

[(1, 20789027984), (2, 10394513992), (4, 5197256996), (8, 2598628498), (16, 1299314249), (691, 30085424), (1382, 15042712), (2764, 7521356), (5528, 3760678), (11056, 1880339)]