219891520

素因数分解:

$2^6\times 5^1\times {\mathrm{687161}}^1$

素因数の和:687178

約数の個数: 28

約数和(自身を含む): 523617444

約数和(自身を除く): 303725924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 687161, 1374322, 2748644, 3435805, 5497288, 6871610, 10994576, 13743220, 21989152, 27486440, 43978304, 54972880, 109945760, 219891520]

約数ペア:

[(1, 219891520), (2, 109945760), (4, 54972880), (5, 43978304), (8, 27486440), (10, 21989152), (16, 13743220), (20, 10994576), (32, 6871610), (40, 5497288), (64, 3435805), (80, 2748644), (160, 1374322), (320, 687161)]