81649408

素因数分解:

$2^8\times {\mathrm{197}}^1\times {\mathrm{1619}}^1$

素因数の和:1832

約数の個数: 36

約数和(自身を含む): 163908360

約数和(自身を除く): 82258952

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 197, 256, 394, 788, 1576, 1619, 3152, 3238, 6304, 6476, 12608, 12952, 25216, 25904, 50432, 51808, 103616, 207232, 318943, 414464, 637886, 1275772, 2551544, 5103088, 10206176, 20412352, 40824704, 81649408]

約数ペア:

[(1, 81649408), (2, 40824704), (4, 20412352), (8, 10206176), (16, 5103088), (32, 2551544), (64, 1275772), (128, 637886), (197, 414464), (256, 318943), (394, 207232), (788, 103616), (1576, 51808), (1619, 50432), (3152, 25904), (3238, 25216), (6304, 12952), (6476, 12608)]