20128376

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{563}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 39085200

約数和(自身を除く): 18956824

約数列:

[1, 2, 4, 8, 41, 82, 109, 164, 218, 328, 436, 563, 872, 1126, 2252, 4469, 4504, 8938, 17876, 23083, 35752, 46166, 61367, 92332, 122734, 184664, 245468, 490936, 2516047, 5032094, 10064188, 20128376]

約数ペア:

[(1, 20128376), (2, 10064188), (4, 5032094), (8, 2516047), (41, 490936), (82, 245468), (109, 184664), (164, 122734), (218, 92332), (328, 61367), (436, 46166), (563, 35752), (872, 23083), (1126, 17876), (2252, 8938), (4469, 4504)]