20956336

素因数分解:

$2^4\times {\mathrm{809}}^1\times {\mathrm{1619}}^1$

素因数の和:2436

約数の個数: 20

約数和(自身を含む): 40678200

約数和(自身を除く): 19721864

約数列:

[1, 2, 4, 8, 16, 809, 1618, 1619, 3236, 3238, 6472, 6476, 12944, 12952, 25904, 1309771, 2619542, 5239084, 10478168, 20956336]

約数ペア:

[(1, 20956336), (2, 10478168), (4, 5239084), (8, 2619542), (16, 1309771), (809, 25904), (1618, 12952), (1619, 12944), (3236, 6476), (3238, 6472)]