81365456

素因数分解:

$2^4\times {\mathrm{241}}^1\times {\mathrm{21101}}^1$

素因数の和:21350

約数の個数: 20

約数和(自身を含む): 158307204

約数和(自身を除く): 76941748

約数列:

[1, 2, 4, 8, 16, 241, 482, 964, 1928, 3856, 21101, 42202, 84404, 168808, 337616, 5085341, 10170682, 20341364, 40682728, 81365456]

約数ペア:

[(1, 81365456), (2, 40682728), (4, 20341364), (8, 10170682), (16, 5085341), (241, 337616), (482, 168808), (964, 84404), (1928, 42202), (3856, 21101)]