80991404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{21937}}^1$

素因数の和:22025

約数の個数: 24

約数和(自身を含む): 154794528

約数和(自身を除く): 73803124

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 21937, 43874, 87748, 285181, 570362, 1140724, 1557527, 3115054, 6230108, 20247851, 40495702, 80991404]

約数ペア:

[(1, 80991404), (2, 40495702), (4, 20247851), (13, 6230108), (26, 3115054), (52, 1557527), (71, 1140724), (142, 570362), (284, 285181), (923, 87748), (1846, 43874), (3692, 21937)]