18910736

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90917}}^1$

素因数の和:90938

約数の個数: 20

約数和(自身を含む): 39458412

約数和(自身を除く): 20547676

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90917, 181834, 363668, 727336, 1181921, 1454672, 2363842, 4727684, 9455368, 18910736]

約数ペア:

[(1, 18910736), (2, 9455368), (4, 4727684), (8, 2363842), (13, 1454672), (16, 1181921), (26, 727336), (52, 363668), (104, 181834), (208, 90917)]