81707536

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{36739}}^1$

素因数の和:36886

約数の個数: 20

約数和(自身を含む): 159451600

約数和(自身を除く): 77744064

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 36739, 73478, 146956, 293912, 587824, 5106721, 10213442, 20426884, 40853768, 81707536]

約数ペア:

[(1, 81707536), (2, 40853768), (4, 20426884), (8, 10213442), (16, 5106721), (139, 587824), (278, 293912), (556, 146956), (1112, 73478), (2224, 36739)]