20408728

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{110917}}^1$

素因数の和:110946

約数の個数: 16

約数和(自身を含む): 39930480

約数和(自身を除く): 19521752

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 110917, 221834, 443668, 887336, 2551091, 5102182, 10204364, 20408728]

約数ペア:

[(1, 20408728), (2, 10204364), (4, 5102182), (8, 2551091), (23, 887336), (46, 443668), (92, 221834), (184, 110917)]