18278416

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{87877}}^1$

素因数の和:87898

約数の個数: 20

約数和(自身を含む): 38139052

約数和(自身を除く): 19860636

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 87877, 175754, 351508, 703016, 1142401, 1406032, 2284802, 4569604, 9139208, 18278416]

約数ペア:

[(1, 18278416), (2, 9139208), (4, 4569604), (8, 2284802), (13, 1406032), (16, 1142401), (26, 703016), (52, 351508), (104, 175754), (208, 87877)]