80847728

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{388691}}^1$

素因数の和:388712

約数の個数: 20

約数和(自身を含む): 168692328

約数和(自身を除く): 87844600

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 388691, 777382, 1554764, 3109528, 5052983, 6219056, 10105966, 20211932, 40423864, 80847728]

約数ペア:

[(1, 80847728), (2, 40423864), (4, 20211932), (8, 10105966), (13, 6219056), (16, 5052983), (26, 3109528), (52, 1554764), (104, 777382), (208, 388691)]