18996848

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91331}}^1$

素因数の和:91352

約数の個数: 20

約数和(自身を含む): 39638088

約数和(自身を除く): 20641240

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91331, 182662, 365324, 730648, 1187303, 1461296, 2374606, 4749212, 9498424, 18996848]

約数ペア:

[(1, 18996848), (2, 9498424), (4, 4749212), (8, 2374606), (13, 1461296), (16, 1187303), (26, 730648), (52, 365324), (104, 182662), (208, 91331)]