127745920

素因数分解:

$2^7\times 5^1\times {\mathrm{199603}}^1$

素因数の和:199622

約数の個数: 32

約数和(自身を含む): 305394120

約数和(自身を除く): 177648200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 199603, 399206, 798412, 998015, 1596824, 1996030, 3193648, 3992060, 6387296, 7984120, 12774592, 15968240, 25549184, 31936480, 63872960, 127745920]

約数ペア:

[(1, 127745920), (2, 63872960), (4, 31936480), (5, 25549184), (8, 15968240), (10, 12774592), (16, 7984120), (20, 6387296), (32, 3992060), (40, 3193648), (64, 1996030), (80, 1596824), (128, 998015), (160, 798412), (320, 399206), (640, 199603)]