20509816

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2287}}^1$

素因数の和:2371

約数の個数: 32

約数和(自身を含む): 41184000

約数和(自身を除く): 20674184

約数列:

[1, 2, 4, 8, 19, 38, 59, 76, 118, 152, 236, 472, 1121, 2242, 2287, 4484, 4574, 8968, 9148, 18296, 43453, 86906, 134933, 173812, 269866, 347624, 539732, 1079464, 2563727, 5127454, 10254908, 20509816]

約数ペア:

[(1, 20509816), (2, 10254908), (4, 5127454), (8, 2563727), (19, 1079464), (38, 539732), (59, 347624), (76, 269866), (118, 173812), (152, 134933), (236, 86906), (472, 43453), (1121, 18296), (2242, 9148), (2287, 8968), (4484, 4574)]