19901896

素因数分解:

$2^3\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1283}}^1$

素因数の和:1573

約数の個数: 32

約数和(自身を含む): 42834240

約数和(自身を除く): 22932344

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 277, 554, 1108, 1283, 1939, 2216, 2566, 3878, 5132, 7756, 8981, 10264, 15512, 17962, 35924, 71848, 355391, 710782, 1421564, 2487737, 2843128, 4975474, 9950948, 19901896]

約数ペア:

[(1, 19901896), (2, 9950948), (4, 4975474), (7, 2843128), (8, 2487737), (14, 1421564), (28, 710782), (56, 355391), (277, 71848), (554, 35924), (1108, 17962), (1283, 15512), (1939, 10264), (2216, 8981), (2566, 7756), (3878, 5132)]