18697328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89891}}^1$

素因数の和:89912

約数の個数: 20

約数和(自身を含む): 39013128

約数和(自身を除く): 20315800

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 89891, 179782, 359564, 719128, 1168583, 1438256, 2337166, 4674332, 9348664, 18697328]

約数ペア:

[(1, 18697328), (2, 9348664), (4, 4674332), (8, 2337166), (13, 1438256), (16, 1168583), (26, 719128), (52, 359564), (104, 179782), (208, 89891)]