28691728

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137941}}^1$

素因数の和:137962

約数の個数: 20

約数和(自身を含む): 59866828

約数和(自身を除く): 31175100

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 137941, 275882, 551764, 1103528, 1793233, 2207056, 3586466, 7172932, 14345864, 28691728]

約数ペア:

[(1, 28691728), (2, 14345864), (4, 7172932), (8, 3586466), (13, 2207056), (16, 1793233), (26, 1103528), (52, 551764), (104, 275882), (208, 137941)]