80994992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{389399}}^1$

素因数の和:389420

約数の個数: 20

約数和(自身を含む): 168999600

約数和(自身を除く): 88004608

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 389399, 778798, 1557596, 3115192, 5062187, 6230384, 10124374, 20248748, 40497496, 80994992]

約数ペア:

[(1, 80994992), (2, 40497496), (4, 20248748), (8, 10124374), (13, 6230384), (16, 5062187), (26, 3115192), (52, 1557596), (104, 778798), (208, 389399)]