66811280

素因数分解:

$2^4\times 5^1\times {\mathrm{835141}}^1$

素因数の和:835154

約数の個数: 20

約数和(自身を含む): 155336412

約数和(自身を除く): 88525132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 835141, 1670282, 3340564, 4175705, 6681128, 8351410, 13362256, 16702820, 33405640, 66811280]

約数ペア:

[(1, 66811280), (2, 33405640), (4, 16702820), (5, 13362256), (8, 8351410), (10, 6681128), (16, 4175705), (20, 3340564), (40, 1670282), (80, 835141)]