18689864

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{54331}}^1$

素因数の和:54380

約数の個数: 16

約数和(自身を含む): 35859120

約数和(自身を除く): 17169256

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 54331, 108662, 217324, 434648, 2336233, 4672466, 9344932, 18689864]

約数ペア:

[(1, 18689864), (2, 9344932), (4, 4672466), (8, 2336233), (43, 434648), (86, 217324), (172, 108662), (344, 54331)]